FR3142345A1 - Leave-in hair treatment compositions - Google Patents

Abstract

Leave-in hair treatment compositions The present disclosure relates to a leave-in hair treatment composition and methods of treating hair using the hair treatment composition. The hair treatment composition comprises: (a) water; (b) about 5 to about 40% by weight of one or more polyols selected from glycerin, ethylene glycol, propylene glycol, butylene glycol, hexylene glycol, pentylene glycol, diethylene glycol, dipropylene glycol, 1,3 propanediol, and a mixture thereof; (c) at least 20% by weight of one or more oils; and (d) at least 0.5% of one or more non-polymeric, non-thiol C1-C9 mono-, di- and/or tricarboxylic acids; and the ratio of (a)+(b)) to (c) is about 1:1 to about 1:5. The composition imparts durability, hydration and moisture to the hair in addition to desirable styling effects. Figure for the abstract: none

Description

Leave-in hair treatment compositions DISCLOSURE AREA

The present disclosure relates to leave-in hair treatment compositions and methods of treating hair.

CONTEXT

Many people suffer from dry, weak, and damaged hair. Dryness and damage can occur due to a number of factors, including exposure to the elements, mechanical treatments ( e.g., brushing the hair), and chemical treatments ( e.g., bleaching, etc.). Chemical treatments often alter the appearance of hair by changing its physical structure, which inevitably causes some degree of hair damage. Environmental factors, such as salt water, sunlight, and heat, are also known to damage hair. Damaged hair is characterized by unnatural changes in the protein structure of individual hair strands or shafts. The damage leads to split ends, dry, straw-like hair, hair that breaks easily, and hair that is “frizzy” and unmanageable. Since the visible portion of the hair is dead, it cannot regenerate. Many over-the-counter and salon treatments claim to repair damaged hair. These include conditioners, hot oil hydrolyzed proteins, vitamin formulations, and extracts of exotic fruits, leaves, or roots. However, these treatments provide little improvement to the hair. Therefore, hair repair and revitalization technologies that restore the hair's properties to their natural form are needed.

SUMMARY OF DISCLOSURE

The leave-in hair treatment compositions and methods of the present disclosure provide a variety of benefits to hair. For example, the compositions and methods strengthen the hair fiber, protect the hair fiber from damage (or further damage), and improve cosmetic attributes such as softness, conditioning, and healthy appearance. The compositions include an unusually high amount of oil, but are stable, translucent, or transparent, with a unique gel-like consistency. The compositions strengthen the hair and moisturize/hydrate the hair without greasiness despite the very high amount of oil. The leave-in hair treatment composition includes:

(a) water;

(b) about 5 to about 40% by weight of one or more polyols selected from glycerin, ethylene glycol, propylene glycol, butylene glycol, hexylene glycol, pentylene glycol, diethylene glycol, dipropylene glycol, 1,3 propanediol, and a mixture thereof;

(c) at least 20% by weight of one or more oils; and

(d) at least 0.5% of one or more non-polymeric, non-thiol C1-C9 mono-, di- and/or tri-carboxylic acids;

in which the ratio ((a)+(b)) to (c) is about 1:1 to about 1:5; and

all weight percentages are relative to a total weight of the composition.

Preferably, the composition is transparent or translucent. Further, the composition preferably has a pH of about 3 to about 6.

In various embodiments, at least one of the one or more oils is a hydrocarbon oil. In various embodiments, at least one of the one or more oils is a silicone-based oil (or simply “silicone oil”). In other embodiments, the leave-in hair treatment composition includes one or more hydrocarbon oils and one or more silicone-based oils. The oils may be volatile or non-volatile and may be of animal, vegetable, mineral, or synthetic origin.

Non-limiting examples of hydrocarbon oils include those containing from 8 to 16 carbon atoms, and in particular branched C ₈ - C ₁₆ alkanes (also known as isoparaffins), for example isododecane (also known as 2,2,4,4,6-pentamethylheptane), isodecane and isohexadecane, linear alkanes and mixtures thereof. Non-limiting examples of linear alkanes include n-nonane (C9), n-decane (C10), n-undecane (C11), n-dodecane (C12), n-tridecane (C13) and n-tetradecane (C14), and mixtures thereof.

Silicone oils may be volatile or non-volatile and may be linear, branched or cyclic. Non-limiting examples include polydimethylsiloxane (dimethicone), dimethiconol, amodimethicone, phenyl modified silicone, silicone block copolymers containing amine or quat groups or other charged or uncharged silicone block copolymers, and mixtures of any of the foregoing. Non-limiting examples include octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane, heptamethylhexyltrisiloxane, heptamethyloctyltrisiloxane, hexamethyldisiloxane, octamethyltrisiloxane, decamethyltetrasiloxane and dodecamethylpentasiloxane, and mixtures thereof.

Non-limiting examples of non-polymeric, non-thiol C1-C9 mono-, di- and tri-carboxylic acids include formic acid, acetic acid, lactic acid, propionic acid, butyric acid, gluconic acid, valeric acid, caproic acid, entanthic acid, caprylic acid, pelargonic acid, capric acid, undecylic acid, lauric acid, tridecylic acid, myristic acid, pentadecylic acid, margaric acid, stearic acid, nonadecylic acid, and arachidic acid, oxalic acid, malonic acid, malic acid, glutaric acid, citraconic acid, succinic acid, adipic acid, tartaric acid, fumaric acid, maleic acid, sebacic acid, azelaic acid, azeloic acid, dodecanoic acid, phthalic acid, isophthalic acid, terephthalic acid and 2,6-naphthalene dicarboxylic acid, citric acid, isocitric acid, aconitric acid, propane-1,2,3-tricarboxylic acid and benzene-1,3,5-tricarboxylic acid, a salt thereof and a mixture thereof.

Non-limiting examples of monocarboxylic acids, or salts thereof, include formic acid, acetic acid, propionic acid, butyric acid, gluconic acid, valeric acid, caproic acid, entanthic acid, caprylic acid, pelargonic acid, capric acid, undecylic acid, lauric acid, tridecylic acid, lauric acid, tridecylic acid, myristic acid, pentadecylic acid, palmitic acid, margaric acid, stearic acid, nonadecylic acid, and arachidic acid, a salt thereof, and a mixture thereof.

Non-limiting examples of dicarboxylic acids include oxalic acid, malonic acid, malic acid, glutaric acid, citraconic acid, succinic acid, adipic acid, tartaric acid, fumaric acid, maleic acid, sebacic acid, azelaic acid, dodecanedioic acid, phthalic acid, isophthalic acid, terephthalic acid, 2,6-naphthalene dicarboxylic acid, a salt thereof, and a mixture thereof.

Non-limiting examples of tricarboxylic acids include citric acid, isocitric acid, aconitric acid, propane-1,2,3-tricarboxylic acid, benzene-1,3,5-tricarboxylic acid, a salt thereof and a mixture thereof. In a preferred embodiment, the leave-in hair treatment composition includes citric acid.

In various embodiments, the leave-in hair treatment composition includes one or more emulsifiers, for example, one or more emulsifiers selected from non-silicone emulsifiers and silicone-based emulsifiers (or simply silicone emulsifiers). Non-limiting examples of non-silicone emulsifiers include oxyalkylenated (more particularly polyoxyethylenated) fatty acid esters of glycerol; oxyalkylenated fatty acid esters of sorbitan; oxyalkylenated (oxyethylenated and/or oxypropylenated) fatty alcohol esters; oxyalkylenated (oxyethylenated and/or oxypropylenated) fatty alcohol ethers; sugar esters such as sucrose stearate; oxyalkylenated (especially polyoxyethylene) castor oil (e.g. PEG-60 hydrogenated castor oil); and combinations thereof.

Non-limiting examples of silicone-based emulsifiers include PEG-10 dimethicone, PEG-12 dimethicone, PEG-14 dimethicone, PEG-17 dimethicone, PPG-12 dimethicone, PPG-17 dimethicone and their derivatized/functionalized forms such as bis-PEG/PPG-20/20 bimethicone bis-PEG/PPG-16/16 PEG/PPG-16/16 dimethicone, PEG/PPG-14 dimethicone, PEG/PPG-20/20 dimethicone, PEG/PPG-20/23 dimethicone, and perfluorononylethyl carboxydecyl PEG-10 dimethicone, and a combination thereof.

In various embodiments, the leave-in hair treatment composition includes one or more C1-C96 monohydric alcohols. Non-limiting examples of monohydric alcohols having 1 to 9 carbon atoms include methyl alcohol, ethyl alcohol, n-propyl alcohol, isopropyl alcohol, n-butyl alcohol, sec-butyl alcohol, isobutyl alcohol, t-butyl alcohol, n-pentyl alcohol, isopentyl alcohol, neopentyl alcohol, cyclopentyl alcohol, n-hexanol, cyclohexyl alcohol, and combinations thereof.

In various embodiments, the hair treatment composition includes one or more thickening agents. Non-limiting examples of thickening agents include polyacrylate cross-linked polymers or cross-linked polyacrylate polymers, cationic acrylate copolymers, anionic acrylic or carboxylic acid polymers, polyacrylamide polymers, polysaccharides, gums, polyquaterniums, vinylpyrrolidone homopolymers/copolymers, a C8-24 hydroxyl-substituted aliphatic acid, a C8-24 conjugated aliphatic acid, sugar fatty esters, polyglyceryl esters, and a mixture thereof.

In various embodiments, the leave-in hair treatment composition includes one or more humectants, for example, one or more hydroxyalkyl ureas. Non-limiting examples include N-(2-hydroxyethyl) urea, N-(2-hydroxypropyl) urea, N-(3-hydroxypropyl) urea, N-(2,3-dihydroxypropyl) urea, N-(2,3,4,5,6-pentahydroxyhexyl) urea, N-methyl-N-(1,3,4,5,6-pentahydroxy-2-hexyl) urea, N-methyl-N'-(1-hydroxy-2-methyl-2-propyl) urea, N-(1-hydroxy-2-methyl-2-propyl) urea, N-(1,3-dihydroxy-2-propyl) urea; N-(trishydroxymethyl) urea, N-ethyl-N'-(2-hydroxyethyl) urea, N,N-bis-(2-hydroxyethyl) urea, N,N'-bis-(2-hydroxyethyl) urea, N, N-bis-(2-hydroxypropyl) urea, N,N'-bis-(2-hydroxypropyl) urea, N,N-bis-(2-hydroxyethyl)-N'-propyl urea, N,N-bis-(2-hydroxypropyl)-N'-(2-hydroxyethyl) urea, N-tert-butyl-N'-(2-hydroxyethyl)-N'-(2-hydroxypropyl) urea, N-(1,3-dihydroxy-2-propyl)-N'-(2-hydroxyethyl) urea, N,N-bis-(2-hydroxyethyl)-N', N'-dimethyl urea, N,N,N',N'-tetrakis-(2-hydroxyethyl) urea, N',N'-bis-(2-hydroxyethyl)-N',N'-bis-(2-hydroxypropyl) urea. In a preferred embodiment, the leave-in hair treatment composition includes N-(2-hydroxyethyl) urea (hydroxyethyl urea).

The compositions of the present disclosure are useful in methods of treating hair. For example, the methods are particularly effective in imparting durability to hair, moisturizing hair, and moisturizing hair. The methods include applying a leave-in hair treatment composition of the present disclosure to hair, and optionally styling the hair. As the name implies, the “leave-in” hair treatment composition remains on the hair.

Other subjects, characteristics, aspects and advantages of embodiments of the invention will become even more apparent from the description and the various examples which follow.

Implementations of the present technology will now be described, by way of example only, with reference to the accompanying figures, in which:

There is a graph showing the denaturation temperature (DSC) of control hair treated with a composition according to the present disclosure and hair treated with a composition of the present disclosure and a shampoo;

There is a graph showing the cycles to breakage (CTB) of control hair treated with a composition according to the present disclosure and hair treated with a composition of the present disclosure and a shampoo;

There is a graph showing the Young's modulus (MTT) of control hair treated with a composition according to the present disclosure and hair treated with a composition of the present disclosure and a shampoo;

There is a graph showing the plateau stress (MTT) of control hair treated with a composition according to the present disclosure and hair treated with a composition of the present disclosure and a shampoo;

There is a graph showing the breaking strain (MTT) of control hair treated with a composition according to the present disclosure and hair treated with a composition of the present disclosure and a shampoo;

There is a graph showing the elongation at break (MTT) of control hair treated with a composition according to the present disclosure and hair treated with a composition of the present disclosure and a shampoo; and

There is a graph showing the tenacity (TTT) of control hair treated with a composition according to the present disclosure and hair treated with a composition of the present disclosure and a shampoo.

It should be understood that the various aspects are not limited to the arrangements and instrumentalities shown in the drawings.

DETAILED DESCRIPTION OF THE DISCLOSURE

The present disclosure relates to leave-in hair treatment compositions and methods of treating hair using the compositions. The compositions include a much higher than typical amount of oil, which helps to hydrate and moisturise the hair. Despite the inclusion of large amounts of oil, the compositions are surprisingly stable and transparent or translucent. Furthermore, the inventors have discovered that the compositions surprisingly strengthen hair fibres, protect hair from damage or other harm, and improve hydration and moisturisation without imparting an oily character to the hair.

Leave-in hair treatment compositions include:

(a) water;

(b) about 5 to about 40% by weight of one or more polyols selected from glycerin, ethylene glycol, propylene glycol, butylene glycol, hexylene glycol, pentylene glycol, diethylene glycol, dipropylene glycol, 1,3 propanediol, and a mixture thereof;

(c) at least 20% by weight of one or more oils; and

(d) at least 0.5% of one or more non-polymeric, non-thiol C1-C9 mono-, di- and/or tri-carboxylic acids;

in which the ratio ((a)+(b)) to (c) is about 1:1 to about 1:5; and

all weight percentages are relative to a total weight of the composition.

Preferably, the hair treatment composition is transparent or translucent. In various embodiments, the hair treatment composition is an emulsion, for example, a bicontinuous emulsion. In other embodiments, the hair treatment composition is a bicontinuous microemulsion. Further, in various embodiments, the hair treatment composition is a bicontinuous microemulsion gel.

(a) Water

The amount of water in the leave-in hair treatment composition will vary. In preferred embodiments, however, the water is in an amount of about 5 to about 30% by weight, based on the total weight of the leave-in hair treatment composition. In other embodiments, the leave-in hair treatment composition includes about 5 to about 25% by weight, about 5 to about 20% by weight, about 5 to about 15% by weight, about 8 to about 30% by weight, about 8 to about 25% by weight, about 8 to about 20% by weight, about 8 to about 15% by weight, about 10 to about 30% by weight, about 10 to about 25% by weight, about 10 to about 20% by weight, or about 10 to about 15% by weight, based on the total weight of the leave-in hair treatment composition.

(b) Polyols

The leave-in hair treatment composition comprises one or more polyols, for example, glycerin and/or one or more glycols selected from ethylene glycol, propylene glycol, butylene glycol, hexylene glycol, pentylene glycol, diethylene glycol, dipropylene glycol, 1,3 propanediol, and a combination thereof. In a preferred embodiment, the leave-in hair treatment composition includes a combination of two or more polyols. For example, in various embodiments, the leave-in hair treatment composition includes glycerin and one or more additional polyols selected from ethylene glycol, propylene glycol, butylene glycol, hexylene glycol, pentylene glycol, diethylene glycol, dipropylene glycol, 1,3 propanediol, and a combination thereof.

The leave-in hair treatment composition preferably includes about 5 to about 40 weight percent of the one or more polyols, based on the total weight of the leave-in hair treatment composition. In other embodiments, the leave-in hair treatment composition includes about 5 to about 35 wt. %, about 5 to about 30 wt. %, about 5 to about 25 wt. %, about 5 to about 20 wt. %, about 8 to about 40 wt. %, about 8 to about 35 wt. %, about 8 to about 30 wt. %, about 8 to about 25 wt. %, about 8 to about 20 wt. %, about 10 to about 40 wt. %, about 10 to about 35 wt. %, or about 10 to about 30 wt. %, or about 10 to about 25 wt. %, about 10 to about 20 wt. %, about 15 to about 40 wt. %, about 15 to about 35 wt. %, about 15 to about 30 wt. %, or about 15 to about 25 wt. % weight, relative to the total weight of the leave-in hair treatment composition.

In various embodiments, the leave-in hair treatment composition includes about 1 to about 15 wt. % glycerin and one or more additional polyols selected from ethylene glycol, propylene glycol, butylene glycol, hexylene glycol, pentylene glycol, diethylene glycol, dipropylene glycol, 1,3 propanediol, and a combination thereof. In other embodiments, the amount of glycerin is about 1 to about 12 wt. %, about 1 to about 10 wt. %, about 1 to about 8 wt. %, about 2 to about 15 wt. %, about 2 to about 12 wt. %, about 2 to about 10 wt. %, about 2 to about 8 wt. %, about 3 to about 15 wt. %, about 3 to about 12 wt. %, about 3 to about 10 wt. %, about 3 to about 8 wt. %, or about 4 to about 6 wt. %, based on the total weight of the leave-in hair treatment composition. As noted above, when glycerin is included in the leave-in hair treatment composition, one or more additional polyols may be included in the leave-in hair treatment compositions. The one or more additional polyols are preferably selected from ethylene glycol, propylene glycol, butylene glycol, hexylene glycol, pentylene glycol, diethylene glycol, dipropylene glycol, 1,3 propanediol, and a combination thereof. The one or more additional polyols are preferably in an amount of about 5 to about 35% by weight, based on the total weight of the leave-in hair treatment composition. In other embodiments, the one or more additional polyols are present in an amount of about 5 to about 30 wt. %, about 5 to about 20 wt. %, about 5 to about 15 wt. %, about 10 to about 35 wt. %, about 10 to about 30 wt. %, about 10 to about 25 wt. %, about 10 to about 20 wt. %, about 10 to about 15 wt. %, about 12 to about 35 wt. %, about 12 to about 30 wt. %, about 12 to about 25 wt. %, about 12 to about 20 wt. %, or about 12 to about 18 wt. %, based on the total amount of the leave-in hair treatment composition.

In various embodiments, the leave-in hair treatment compositions include glycerin and one or more additional polyols (selected from ethylene glycol, propylene glycol, butylene glycol, hexylene glycol, pentylene glycol, diethylene glycol, dipropylene glycol, 1,3 propanediol, and a combination thereof) in a weight ratio of about 1:10 to about 1:1 (glycerin:additional polyol(s)). In other embodiments, the weight ratio is about 1:8 to about 1:1, about 1:6 to about 1:1, about 1:6 to about 1:1, about 1:5 to about 1:1, about 1:10 to about 1:1.5, about 1:8 to about 1:1.5, about 1:6 to about 1:1.5, from about 1:5 to about 1:1.5, from about 1:10 to about 1:2, from about 1:8 to about 1:2, from about 1:5 to about 1:2, or from about 1:4 to about 1:2.

(c) Oils

The term “oil” refers to any fatty substance that is in liquid form at room temperature (20-25°C) and atmospheric pressure. The one or more oils may be hydrocarbon oils, silicone oils, fluorinated oils, non-fluorinated oils, or combinations thereof. The term “hydrocarbon oil” is interchangeable with the term “hydrocarbon oil.” In addition, the term “silicone oil” is interchangeable with the term “silicone oil.” The one or more oils may be “volatile oils” or “non-volatile oils.” As used herein, the term “volatile oil” refers to an oil (or non-aqueous medium) capable of evaporating upon contact with the skin in less than one hour at room temperature and atmospheric pressure. The volatile oil is a volatile cosmetic oil, which is liquid at room temperature, in particular having a non-zero vapor pressure, at room temperature and at atmospheric pressure, in particular having a vapor pressure ranging from 0.13 Pa to 40,000 Pa (10-3 to 300 mmHg), preferably ranging from 1.3 Pa to 13,000 Pa (0.01 to 100 mmHg) and preferentially ranging from 1.3 Pa to 1300 Pa (0.01 to 10 mmHg). Preferably, at least one of the one or more oils in the leave-in hair treatment compositions of the present disclosure is a volatile oil. Furthermore, preferably, the leave-in hair treatment compositions include at least one hydrocarbon oil and at least one silicone-based oil.

The amount of the one or more oils in the leave-in hair treatment compositions will vary. However, in various embodiments, the leave-in hair treatment composition includes about 30 to about 70 wt. % of the one or more oils. However, in other embodiments, the leave-in hair treatment composition includes about 30 to about 65 wt. %, about 30 to about 60 wt. %, about 30 to about 55 wt. %, about 35 to about 70 wt. %, about 35 to about 65 wt. %, about 35 to about 60 wt. %, about 35 to about 55 wt. %, about 40 to about 70 wt. %. about 40 to about 65 wt. %, about 40 to about 55 wt. %, about 45 to about 70 wt. %, about 45 to about 65 wt. %, about 45 to about 60 wt. %, about 45 to about 55 wt. %, about 50 to about 70 wt. %, about 50 to about 65 wt. %, or about 50 to about 60 wt. %, based on the total weight of the leave-in hair treatment composition.

(c)(i) Hydrocarbon oil

In various embodiments, the leave-in hair treatment composition includes one or more hydrocarbon oils. The one or more hydrocarbon oils may be volatile or non-volatile hydrocarbon oils. In a preferred embodiment, at least one of the one or more hydrocarbon oils is a volatile hydrocarbon oil. Non-limiting examples include volatile hydrocarbon oils containing 8 to 16 carbon atoms, and in particular C8-C16 branched alkanes (also known as isoparaffins), for example, isododecane (also known as 2,2,4,4,6-pentamethylheptane), isodecane and isohexadecane, and for example, oils sold under the trade names ISOPAR® or PERMETHYL®, volatile linear alkanes, and mixtures thereof.

According to an advantageous embodiment, the volatile linear alkanes suitable for the disclosure have an evaporation rate ranging from 0.01 to 3.5 mg/cm2/min at room temperature (25 °C) and atmospheric pressure (760 mmHg) and comprise from 9 to 14 carbon atoms. Examples include n-nonane (C9), n-decane (C10), n-undecane (C11), n-dodecane (C12), n-tridecane (C13) and n-tetradecane (C14), and mixtures thereof. In various embodiments, at least one of the one or more hydrocarbon oils is a hydrocarbon oil selected from a C9-C12 alkane, a C10-C13 alkane, an alkane, a C12-C17 alkane, a C13-C15 alkane, a C14-C17 alkane, a C14-C19 alkane, a C14-C20 alkane, a C14-C22 alkane, a C15-C19 alkane, a C21-C28 alkane, a C17-C23 alkane, a C9-C12 isoalkane, a C9-C13 isoalkane, a C9-C14 isoalkane, a C9-C16 isoalkane, a C10-C11 isoalkane, a C10-C12 isoalkane, a C10-C13 isoalkane, a C11-C13 isoalkane, a C11-14 isoalkane, a C12-14 isoalkane, a C12-20 isoalkane, a C13-14 isoalkane, a C13-16 isoalkane, a C14-16 isoalkane, a C15-19 isoalkane, isododecane, diethylhexylcyclohexane, undecane, tridecane, tetradecane, pentadecane, hexadecane, octadecane, docosane, squalane, hydrogenated polyisobutene, polybutene, hydrogenated polydecene, hydrogenated didecene, mineral oil, liquidum, petrolatum, dodecane, isohexadecane, isododecane, isoeicosane and combinations thereof. In a preferred embodiment, at least one of the one or more oils is a hydrocarbon oil selected from isododecane and a C9-C16 isoalkane.

The total amount of the one or more hydrocarbon oils, if present, will vary. However, in various embodiments, the total amount of the one or more hydrocarbon oils in the leave-in hair styling composition is from about 20 to about 65% by weight, based on the total weight of the leave-in hair composition. In other embodiments, the leave-in hair styling composition includes about 20 to about 60 wt. %, about 20 to about 55 wt. %, about 20 to about 50 wt. %, about 25 to about 65 wt. %, about 25 to about 60 wt. %, about 25 to about 55 wt. %, about 25 to about 50 wt. %, about 30 to about 65 wt. %, about 30 to about 60 wt. %, about 30 to about 50 wt. %, about 35 to about 65 wt. %, about 35 to about 60 wt. %, about 35 to about 55 wt. %, about 35 to about 50 wt. %, or about 40 to about 50 wt. %, based on the total weight of the leave-in hair treatment composition.

(c)(ii) Silicone based oil

In various embodiments, the leave-in hair treatment composition includes one or more silicone-based oils. The one or more silicone-based oils may be volatile or non-volatile. In a preferred embodiment, at least one of the one or more silicone-based oils is a volatile silicone-based oil. The silicone-based oils include linear, branched, and cyclic silicone oils and include volatile and non-volatile silicone oils. Non-limiting examples include polydimethylsiloxane (dimethicone), dimethiconol, amodimethicone, phenyl-modified silicone, silicone block copolymers containing amine or quat groups or other charged or uncharged silicone block copolymers, and mixtures of any of the foregoing. Other non-limiting examples include octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane, heptamethylhexyltrisiloxane, heptamethyloctyltrisiloxane, hexamethyldisiloxane, octamethyltrisiloxane, decamethyltetrasiloxane and dodecamethylpentasiloxane, and mixtures thereof. In a preferred embodiment, the leave-in hair styling composition includes at least one silicone-based oil selected from dimethicone, dimethiconol, amodimethicone and a combination thereof.

The total amount of the one or more silicone-based oils in the leave-in hair treatment composition, if present, will vary. However, in various embodiments, the leave-in hair treatment composition includes about 1 to about 25% by weight of the one or more silicone-based oils. In other embodiments, the leave-in hair treatment composition includes about 1 to about 20 wt. %, about 1 to about 15 wt. %, about 2 to about 25 wt. %, about 2 to about 20 wt. %, about 2 to about 15 wt. %, about 5 to about 25 wt. %, about 5 to about 20 wt. %, about 5 to about 15 wt. %, about 8 to about 25 wt. %, about 8 to about 20 wt. %, about 8 to about 20 wt. %, or about 8 to about 15 wt. %, based on the total weight of the leave-in hair treatment composition.

As discussed above, the leave-in hair treatment compositions may include one or more hydrocarbon oils and one or more silicone-based oils. In various embodiments, the leave-in hair treatment compositions are in a weight ratio of hydrocarbon oil to silicone-based oil of about 10:1 to about 1:1 (hydrocarbon oil:silicone-based oil). In other embodiments, the weight ratio of hydrocarbon oil to silicone oil is about 8:1 to about 1:1, about 6:1 to about 1:1, about 5:1 to about 1:1, about 10:1 to about 2:1, about 8:1 to about 2:1, about 6:1 to about 2:1, about 5:1 to about 2:1, about 10:1 to about 3:1, about 8:1, about 3:1, about 6:1 to about 3:1, or about 5:1 to about 3:1.

As mentioned above, the one or more oils may be volatile or non-volatile. In various embodiments, the leave-in hair treatment compositions include one or more non-volatile oils. A non-limiting list of non-volatile oils, silicone-based oils, etc. is provided later, under the heading “Oils.”

The non-volatile oils may be hydrocarbon oils, silicone oils, fluorinated oils, non-fluorinated oils, or combinations thereof. The total amount of the one or more non-volatile oils, if present, will vary. However, in various embodiments, the leave-in hair treatment composition includes about 0.01 to about 20% by weight of the one or more non-volatile oils, based on the total weight of the leave-in hair treatment composition. In other embodiments, the leave-in hair treatment composition includes about 0.01 to about 15 wt. %, about 0.01 to about 10 wt. %, about 0.01 to about 5 wt. %, about 0.1 to about 15 wt. %, about 0.1 to about 10 wt. %, about 0.1 to about 5 wt. %, about 1 to about 15 wt. %, about 1 to about 10 wt. %, or about 1 to about 5 wt. %, based on the total weight of the leave-in hair treatment composition.

Ratio ((a)+(b) : (c)

The leave-in hair treatment compositions include a weight ratio of water and the one or more polyols to the one or more oils of about 1:1 to about 1:5. However, in various embodiments, the weight ratio is about 1:1 to about 1:4.5, 1:1 to about 1:4, about 1:1.5 to about 5, about 1:1.5 to about 1:4.5, about 1:1.5 to about 4, about 1:2 to about 1:5, about 1:2 to about 1:45, about 1:2 to about 1:4, about 1:3 to about 5, about 1:3 to about 1:4.5, or about 1:3 to about 1:4.

(d) Non-thiol mono-, di- and/or tri-carboxylic acids

Non-limiting examples of non-polymeric, non-thiol C1-C9 mono-, di- and tri-carboxylic acids include formic acid, acetic acid, lactic acid, propionic acid, butyric acid, gluconic acid, valeric acid, caproic acid, entanthic acid, caprylic acid, pelargonic acid, capric acid, undecylic acid, lauric acid, tridecylic acid, myristic acid, pentadecylic acid, margaric acid, stearic acid, nonadecylic acid and arachidic acid, oxalic acid, malonic acid, malic acid, glutaric acid, citraconic acid, succinic acid, adipic acid, tartaric acid, fumaric acid, maleic acid, sebacic acid, azelaic acid, dodecanedioic acid, phthalic acid, isophthalic acid, terephthalic acid, and 2,6-naphthalene dicarboxylic acid, citric acid, isocitric acid, aconitric acid, propane-1,2,3-tricarboxylic acid, and benzene-1,3,5-tricarboxylic acid, a salt thereof, and a mixture thereof. In various embodiments, the leave-in hair treatment composition comprises

- at least one monocarboxylic acid selected from formic acid, acetic acid, lactic acid, propionic acid, butyric acid, gluconic acid, valeric acid, caproic acid, entanthic acid, caprylic acid, pelargonic acid, capric acid, undecylic acid, lauric acid, tridecylic acid, lauric acid, tridecylic acid, myristic acid, pentadecylic acid, palmitic acid, margaric acid, stearic acid, nonadecylic acid, and arachidic acid, a salt thereof, and a mixture thereof;

- at least one dicarboxylic acid selected from oxalic acid, malonic acid, malic acid, glutaric acid, citraconic acid, succinic acid, adipic acid, tartaric acid, fumaric acid, maleic acid, sebacic acid, azelaic acid, dodecanedioic acid, ° phthalic acid, isophthalic acid, terephthalic acid and 2,6-naphthalene dicarboxylic acid, a salt thereof and a mixture thereof; and/or

- at least one tricarboxylic acid selected from citric acid, isocitric acid, aconitric acid, propane-1,2,3-tricarboxylic acid and benzene-1,3,5-tricarboxylic acid, a salt thereof, and a mixture thereof. In a preferred embodiment, the leave-in hair treatment composition includes citric acid.

In a preferred embodiment, the leave-in hair treatment composition comprises citric acid. In other embodiments, the leave-in hair treatment composition comprises citric acid and optionally one or more additional non-polymeric, non-thiol C1-C9 mono-, di-, and tri-carboxylic acids.

The total amount of the one or more non-polymeric, non-thiol C1-C9 mono-, di- and tri-carboxylic acids will vary. However, the amount of the one or more non-polymeric, non-thiol C1-C9 mono-, di- and tri-carboxylic acids, their salts or a combination thereof is preferably at least 0.5% by weight, based on the total weight of the leave-in hair treatment composition. In various embodiments, the total amount of the one or more non-polymeric, non-thiol mono-, di-, and tri-carboxylic acids, a salt thereof, or a combination thereof is at least 0.5 to about 5 wt. %, at least 0.5 to about 4 wt. %, at least 0.5 to about 3 wt. %, at least 0.5 to about 2 wt. %, about 0.8 to about 5 wt. %, about 0.8 to about 4 wt. %, about 0.8 to about 3 wt. %, about 0.8 to about 2 wt. %, about 1 to about 5 wt. %, about 1 to about 4 wt. %, about 1 to about 3 wt. %, or about 1 to about 2 wt. %, based on the total weight of the leave-in hair treatment composition.

(e) Emulsifiers

In various embodiments, the leave-in hair treatment composition includes one or more emulsifiers, for example, one or more emulsifiers selected from non-silicone emulsifiers and silicone-based emulsifiers (or simply silicone emulsifiers). Preferably, the one or more emulsifiers are nonionic emulsifiers. Further, in a preferred embodiment, the leave-in hair treatment composition includes at least one non-silicone emulsifier and at least one silicone-based emulsifier.

Non-limiting examples of emulsifiers include non-ionic emulsifiers such as oxyalkylenated (especially polyoxyethylenated) fatty acid esters of glycerol; oxyalkylenated fatty acid esters of sorbitan; oxyalkylenated (oxyethylenated and/or oxypropylenated) fatty acid esters; oxyalkylenated (oxyethylenated and/or oxypropylenated) fatty alcohol ethers; sugar esters such as sucrose stearate; and mixtures thereof. A more exhaustive but non-limiting list of non-ionic emulsifiers is provided below under the heading "Non-ionic Surfactants".

The total amount of emulsifiers, if present, will vary. However, in various embodiments, the leave-in hair treatment composition includes about 0.1 to about 10% by weight of one or more emulsifiers, based on the total weight of the leave-in hair treatment composition. In other embodiments, the leave-in hair treatment composition includes from about 0.1 to about 8 wt. %, about 0.1 to about 5 wt. %, about 0.1 to about 3 wt. %, about 0.5 to about 10 wt. %, about 0.5 to about 8 wt. %, about 0.5 to about 5 wt. %, about 0.5 to about 3 wt. %, about 1 to about 10 wt. %, about 1 to about 8 wt. %, about 1 to about 5 wt. %, or about 1 to about 3 wt. %, based on the total weight of the leave-in hair treatment composition.

(e)(i) Silicone-based emulsifiers

In various embodiments, the leave-in hair treatment composition includes one or more silicone-based emulsifiers. Non-limiting examples include crosslinked organosiloxane emulsifiers such as dimethicone/PEG/PPG 15 dimethicone crosslinked polymer, PEG-10 dimethicone crosslinked polymer, PEG-10/15 dimethicone crosslinked polymer, PEG-15 dimethicone crosslinked polymer, polyglycerin-3 dimethicone crosslinked polymer, PPG-20 dimethicone crosslinked polymer, dimethiconol/methylsilanol/silicate crosslinked polymer; dimethiconol/silicate crosspolymer, PEG-15 lauryl dimethicone crosspolymer, polyglycerin-3 lauryl dimethicone crosspolymer, PEG-8 dimethicone polysorbate-20 crosspolymer, PEG-10 dimethicone/vinyl dimethicone crosspolymer, PEG-10 lauryl dimethicone crosspolymer, PEG-15/lauryl dimethicone crosspolymer, PEG-15 laurylpolydimethylsiloxyethyl crosspolymer, and combinations thereof. In various embodiments, the compositions include one or more linear organosiloxane emulsifiers selected from the group consisting of cyclotetrasiloxane (and) cyclopentasiloxane (and) PEG/PPG-18 dimethicone, cyclopentasiloxane (and) PEG/PPG-18/18 dimethicone; PEG/PPG-18/18 dimethicone; lauryl PEG/PPG-18/18 methicone; cetyl PEG/PPG-14/14 dimethicone; bis-cetyl PEG/PPG-14/14 dimethicone; cetyl PEG/PPG-10/1 dimethicone; PEG-11 methyl ether dimethicone; PEG/PPG-20/22 butyl ether dimethicone; PEG-9 dimethicone; PEG-3 dimethicone; PEG-9 methyl ether dimethicone; PEG-10 dimethicone; lauryl PEG-9 polymethylsiloxyethyl dimethicone, and a combination thereof.

In a preferred embodiment, the leave-in hair treatment composition includes one or more silicone-based emulsifiers selected from PEG-10 dimethicone, PEG-12 dimethicone, PEG-14 dimethicone, PEG-17 dimethicone, PPG-12 dimethicone, PPG-17 dimethicone and their derivatized/functionalized forms such as bis-PEG/PPG-20/20 dimethicone bis-PEG/PPG-16/16 PEG/PPG-16-16 dimethicone, PEG/PPG-14/4 dimethicone, PEG/PPG-20/20 dimethicone, PEG/PPG-20/23 dimethicone and perfluorononylethyl carboxydecyl PEG-10 dimethicone, and a combination thereof,

A more exhaustive but non-limiting list of non-ionic emulsifiers is provided below, under the heading "Non-ionic surfactants".

The amount of the one or more silicone-based emulsifiers in the leave-in hair treatment composition, if present, will vary. However, in various embodiments, the leave-in hair treatment composition includes about 0.1 to about 9% by weight of the one or more silicone-based emulsifiers, based on the total weight of the leave-in hair treatment composition. In other embodiments, the leave-in hair treatment composition includes about 0.1 to about 8 wt. %, about 0.1 to about 5 wt. %, about 0.1 to about 3 wt. %, about 0.5 to about 10 wt. %, about 0.5 to about 8 wt. %, about 0.5 to about 5 wt. %, about 0.5 to about 3 wt. %, about 1 to about 10 wt. %, about 1 to about 8 wt. %, about 1 to about 5 wt. %, or about 1 to about 3 wt. % of one or more silicone-based emulsifiers, based on the total weight of the leave-in hair treatment composition.

(e)(ii) Non-silicone emulsifiers

In various embodiments, the leave-in hair treatment composition includes one or more non-ionic non-silicone emulsifiers. Non-limiting examples include oxyethylenated amides, oxyethylenated fatty alcohols, and ethylene oxide/propylene oxide block copolymer (polycondensate) surfactants, and a mixture thereof. In a preferred embodiment, the hair coloring base composition includes PEG-4 rapeseed amide (an oxyethylenated amide), deceth-3 (an oxyethylenated fatty alcohol), Poloxamer 338 (ethylene oxide/propylene oxide block copolymer (polycondensate) surfactants), or a combination thereof.

Non-limiting examples of non-ionic oxyethylenated amides are those of the following formula:

R—[(OCH2CH2)n-OCH2]p-CO—N(R′)—(CH2CH2O)n′H

in which:

p denotes 0 or 1,

n denotes a number in the range 1 to 10 and preferably 1 to 6,

n′ denotes a number in the range 1 to 100 and preferably 1 to 60,

R′ denotes a hydrogen atom or a CH2CH2OH radical and preferably a hydrogen atom, and

R denotes a C10-C30 and preferably C12-C22 alkyl or alkenyl radical.

Examples of these compounds include Amidet A15 sold by Kao Company (INCI name: Trideceth-2 carboxamide MEA), Ethomid HP 60 sold by Akzo Nobel Company (INCI name: PEG-50 Hydrogenated Palmamide), and Amidet N sold by Kao Company (INCI name: PEG-4 Rapeseedamide).

Non-limiting examples of fatty alcohols include linear and branched, saturated or unsaturated alcohols comprising from 6 to 30 carbon atoms and preferably from 8 to 30 carbon atoms, for example, cetyl alcohol, isostearyl alcohol, stearyl alcohol and mixtures thereof (cetylstearyl alcohol), octyldodecanol, 2-butyloctanol, 2-hexyldecanol, 2-undecylpentadecanol, oleyl alcohol, linolenyl alcohol, ricinoleyl alcohol, undecylenyl alcohol and linoleyl alcohol and mixtures thereof.

Non-limiting examples of oxyethylenated fatty alcohols include those comprising less than 10 OE units, preferably selected from oxyethylenated derivatives of saturated or unsaturated, linear or branched, preferably linear, C ₈ -C ₃₀ and preferably C ₁₂ -C ₂₂ fatty alcohols, for example cetyl alcohol, oleyl alcohol, oleocetyl alcohol, lauryl alcohol, behenyl alcohol, cetearyl alcohol, stearyl alcohol and isostearyl alcohol, and mixtures thereof.

As oxyethylenated fatty alcohols comprising less than 10 EO units, mention may be made of oxyethylenated fatty alcohols comprising from 2 to 8 and preferably from 2 to 6 EO units, for example adducts of ethylene oxide and lauryl alcohol, for example lauryl alcohol 2 EO (CTFA name: laureth-2), adducts of ethylene oxide and stearyl alcohol, for example stearyl alcohol 2 EO (CTFA name: steareth-2), adducts of ethylene oxide and decyl alcohol, for example decyl alcohol 3 EO (CTFA name: deceth-3), decyl alcohol 5 EO (CTFA name: deceth-5), adducts of ethylene oxide and oleocetyl alcohol, for example oleocetyl alcohol 5 EO (CTFA name: deceth-5), : oleoceteth-5) and their mixtures. In some cases, deceth-3 can be particularly useful.

Furthermore, non-limiting examples of oxyethylenated fatty alcohols having an average degree of ethoxylation of 2 to 29 are, for example, laureth-2, oleth-2, ceteareth-2, laureth-3, oleth-3, ceteareth-3, laureth-4, oleth-4, ceteareth-4, laureth-4, laureth-5, oleth-5, ceteareth-5, laureth-5, deceth-4, deceth-7, laureth-7, oleth-7, coceth-7, ceteth-7, ceteareth-7, C11-15 pareth-7, laureth-9, oleth-9, ceteareth-9, laureth-10, oleth-10, beheneth-10, ceteareth-10, laureth-12, ceteareth-12, trideceth-12, ceteth-15, laneth-15, ceteareth-15, laneth-16, ceteth-16, oleth-16, steareth-16, oleth-20, ceteth-20, ceteareth-20, laneth-20, steareth-21, ceteareth-23, ceteareth-25, ceteareth-27, and a mixture thereof.

As a surfactant with a block copolymer (polycondensate) of ethylene oxide and propylene oxide which can be used, mention may be made of the triblock polycondensates polyethylene glycol/polypropylene glycol/polyethylene glycol sold under the names "Synperonic", such as "Synperonic PE/F32" (INCI name: Poloxamer 108), "Synperoni. PE/F108" (INCI name: Poloxamer 338), "Synperonic PE/L44" (INCI name: Poloxamer 124), "SynperoniC PE/L42" (INCI name: Poloxamer 122), "Synperonic PE/F127" (INCI name: Poloxamer 407), "Synperonic PE/F88" (INCI name: Poloxamer 238) or "Synperonic PE/L64" (INCI name: Poloxamer 184), by Croda or also "Lutrol F68" (INCI name: Poloxamer 188), sold by BASF. In some cases, Poloxamer 338 can be particularly useful.

In various embodiments, the leave-in hair treatment composition includes one or more non-silicone emulsifiers. Non-limiting examples include oxyalkylenated (particularly polyoxyethylenated) fatty acid esters of glycerol; oxyalkylenated fatty acid esters of sorbitan; oxyalkylenated (oxyethylenated and/or oxypropylenated) fatty acid esters; oxyalkylenated (oxyethylenated and/or oxypropylenated) fatty alcohol ethers; sugar esters such as sucrose stearate; oxyalkylenated (particularly polyoxyethylenated) castor oil (e.g., PEG-60 hydrogenated castor oil); and combinations thereof. In a preferred embodiment, at least one of the one or more non-silicone emulsifiers is selected from PEG-7 glyceryl cocoate, PEG-20 methylglucoside sesquistearate, PEG-20 glyceryl triisostearate, PG-5 dioleate, PG-4 diisostearate, PG-10 isostearate, PEG-8 isostearate, and hydrogenated castor oil (e.g., PEG-60 hydrogenated castor oil), and a combination thereof.

In addition, the one or more non-silicone emulsifiers include at least one oxyethylenated fatty alcohol, for example those having an average degree of ethoxylation of 2 to 29 are, for example, laureth-2, oleth-2, ceteareth-2, laureth-2, laureth-3, oleth-3, ceteareth-3, laureth-4, oleth-4, ceteareth-4, laureth-4, laureth-5, oleth-5, ceteareth-5, laureth-5, deceth-4, deceth-7, laureth-7, oleth-7, coceth-7, ceteth-7, ceteareth-7, C11-15 pareth-7, laureth-9, oleth-9, ceteareth-9, laureth-10, oleth-10, beheneth-10, ceteareth-10, laureth-12, ceteareth-12, trideceth-12, ceteth-15, laneth-15, ceteareth-15, laneth-16, ceteth-16, oleth-16, steareth-16, oleth-20, ceteareth-20, ceteareth-20, laneth-20, steareth-21, ceteareth-23, ceteareth-25, ceteareth-27, and a mixture thereof.

A more exhaustive list of useful non-silicone emulsifiers, including nonionic emulsifiers which may be included in the reducing composition, is provided below under the heading "emulsifiers".

The total amount of the one or more non-silicone emulsifiers in the leave-in hair treatment composition, if present, will vary. However, in various embodiments, the leave-in hair treatment composition includes about 0.01 to about 9% by weight of the one or more non-silicone emulsifiers, based on the total weight of the leave-in hair treatment composition. In other embodiments, the leave-in hair treatment composition includes from about 0.01 to about 8 wt. %, about 0.01 to about 5 wt. %, about 0.01 to about 3 wt. %, about 0.1 to about 8 wt. %, about 0.1 to about 5 wt. %, about 0.1 to about 3 wt. %, about 0.5 to about 10 wt. %, about 0.5 to about 8 wt. %, about 0.5 to about 5 wt. %, or about 0.5 to about 3 wt. %, based on the total weight of the leave-in hair treatment composition.

(f) Monoalcohols

In various embodiments, the leave-in hair treatment composition includes one or more C1-C9 monohydric alcohols, preferably one or more C1-C6 monohydric alcohols. Non-limiting examples of monohydric alcohols having 1 to 6 carbon atoms include methyl alcohol, ethyl alcohol, n-propyl alcohol, isopropyl alcohol, n-butyl alcohol, sec-butyl alcohol, isobutyl alcohol, t-butyl alcohol, n-pentyl alcohol, isopentyl alcohol, neopentyl alcohol, cyclopentyl alcohol, n-hexanol, cyclohexyl alcohol, and a combination thereof. In a preferred embodiment, the leave-in hair treatment composition includes one or more monohydric alcohols selected from ethanol, isopropyl alcohol, and a mixture thereof. In another preferred embodiment, the leave-in hair treatment composition includes ethanol.

The amount of the one or more monohydric alcohols will vary. However, in various embodiments, the leave-in hair treatment composition includes about 1 to about 20 weight percent of the one or more monohydric alcohols, based on the total weight of the leave-in hair treatment composition. In other embodiments, the leave-in hair treatment composition includes from about 1 to about 15 wt. %, from about 1 to about 12 wt. %, from about 1 to about 10 wt. %, from about 1 to about 8 wt. %, from about 2 to about 20 wt. %, from about 2 to about 15 wt. %, from about 2 to about 12 wt. %, from about 2 to about 10 wt. %, from about 2 to about 8 wt. %, from about 3 to about 15 wt. %, from about 3 to about 12 wt. %, from about 3 to about 10 wt. %, or from about 3 to about 8 wt. %, based on the total weight of the leave-in hair treatment composition.

(g) Thickening agents

In various embodiments, the hair treatment composition includes one or more thickening agents. Non-limiting examples of thickening agents include crosslinked polyacrylate polymers including crosslinked polyacrylate polymers, cationic acrylate copolymers, anionic acrylic or carboxylic acid polymers, polyacrylamide polymers, polysaccharides, gums, polyquaterniums, vinylpyrrolidone homopolymers/copolymers, a C8-24 hydroxyl-substituted aliphatic acid, a C8-24 conjugated aliphatic acid, sugar fatty esters, polyglyceryl esters, and a mixture thereof.

In various embodiments, the one or more thickening agents are preferably selected from: modified or unmodified carboxyvinyl polymers, such as Carbopols (CTFA name: carbomer); polyacrylates and polymethacrylates, such as products sold under the names Lubrajel and Norgel; polyacrylamides; polymers and copolymers of 2-acrylamido-2-methylpropanesulfonic acid, which are optionally crosslinked and/or neutralized, such as poly(2-acrylamido-2-methylpropanesulfonic acid) sold under the name HostaceRIN AMPS (CTFA name: ammonium polyacryldimethyltauramide); crosslinked anionic/AMPHGAP copolymers, such as those sold under the name Sepigel 305 (CTFA name: Polyacrylamide/C13-14 Isoparaffin/Laureth-7) and under the name Simulgel 600 (CTFA name: Acrylamide/Sodium acryloyldimethyltaurate copolymer/Isohexadecane/Polysorbate 80); polysaccharide biopolymers, for example xanthan gum, guar gum, locust bean gum, acacia gum, scleroglucans, chitin and chitosan derivatives, carrageenans, gellans, alginates, celluloses such as microcrystalline cellulose, carboxymethyl cellulose, hydroxymethyl cellulose and hydroxypropyl cellulose; and mixtures thereof. In a preferred embodiment, the one or more thickening agents are selected from polymeric thickening agents. In another embodiment, the one or more thickening agents are selected from polymeric thickening agents. preferred embodiment, at least one of the one or more thickening agents is a polyacrylamide.

The total amount of the one or more thickening agents, if present, will vary. However, in various embodiments, the leave-in hair treatment composition includes about 0.01 to about 6% by weight of the one or more thickening agents, based on the total weight of the leave-in hair treatment composition. In other embodiments, the leave-in hair treatment composition includes about 0.01 to about 5 wt. %, about 0.01 to about 3 wt. %, about 0.01 to about 2 wt. %, about 0.05 to about 5 wt. %, about 0.05 to about 3 wt. %, about 0.05 to about 2 wt. %, about 0.1 to about 5 wt. %, about 0.1 to about 3 wt. %, about 0.1 to about 2 wt. %, about 0.5 to about 5 wt. %, about 0.5 to about 3 wt. %, or about 0.5 to about 2 wt. % of one or more thickening agents, based on the total weight of the leave-in hair treatment composition.

(h) Humectant (moisturizing agent)

In various embodiments, the leave-in hair treatment composition includes one or more humectants. Non-limiting examples of humectants include hydroxyalkylurea (such as hydroxyethylurea), amino acids, chondroitin sulfate, diglycerin, erythritol, fructose, glucose, glycerin, glycerol polymers, glycol, 1,2,6-hexanetritriol, honey, hyaluronic acid, hydrogenated honey, hydrogenated starch hydrolysate, inositol, lactitol, maltitol, maltose, mannitol, PEG-15 butanediol, polyglyceryl sorbitol, pyrrolidone carboxylic salts, potassium PCA, propylene glycol, sodium glucuronate, sodium PCA, sorbitol, sucrose, trehalose, urea, and xylitol. Additional non-limiting examples include acetylated lanolin, acetylated lanolin alcohol, alanine, seaweed extract, Aloe barbadensis, Aloe barbadensis extract, Aloe barbadensis gel, Althea officinalis extract, Apricot kernel oil (Prunus armeniaca), arginine, aspartate arginine, Arnica montana extract, aspartic acid, avocado oil (Persea gratissima), barrier sphingolipids, butyl alcohol, beeswax, behenyl alcohol, beta-sitosterol, birch bark extract (Betula alba), borage extract (Borago officinalis), ruscus aculeatus extract, butylene glycol, Calendula extract officinalis, Calendula officinalis oil, wax Candelilla (Euphorbia cerifera), Canola Oil, Caprylic/Capric Triglyceride, Cardamom Oil (Elettaria cardamomum), Carnauba Wax (Copernicia cerifera), Carrot Oil (Daucus carota sativa), Castor Oil (Ricinus communis), Ceramides, Ceresin, Cetyl Acetate, Cetyl Octanoate, Cetyl Palmitate, Chamomile Oil (Anthemis nobilis), Cholesterol, Cholesterol Esters, Cholesterol Hydroxystearate, Citric Acid, Clary Oil (Salvia sclarea), Cocoa Butter (Theobroma cacao), Coco-Caprylate/Caprate, Coconut Oil (Cocos nucifera), Collagen, Collagen Amino Acids, Corn Oil (Zea mays), Fatty Acids, Decyl Oleate, Dimethicone Copolyol, Dimethiconol, Dioctyl Adipate, Succinate dioctyl, dipentaerythrityl hexacaprylate/hexacaprate, ADN, erythritol, ethoxydiglycol, ethyl linoleate, Eucalyptus globulus oil, Oenothera biennis (evening primrose) oil, fatty acids, Geranium maculatum oil, glucosamine, glucose glutamate, glutamic acid, glyceroth-26, glycerin, glycerol, glyceryl distearate, glyceryl hydroxystearate, glyceryl laurate, glyceryl linoleate, glyceryl myristate, glyceryl oleate, glyceryl stearate, glyceryl stearate SE, glycine, glycol stearate, glycol stearate SE, glycosaminoglycans, Vitis vinifera (grape) seed oil, Corylus americana (hazelnut) oil, Hazelnut oil (Corylus avellana), hexylene glycol, hyaluronic acid, hybrid safflower oil (Carthamus tinctorius), hydrogenated castor oil, hydrogenated coco-glycerides, hydrogenated coconut oil, hydrogenated lanolin, hydrogenated lecithin, hydrogenated palm glyceride, hydrogenated palm kernel oil, hydrogenated soybean oil, hydrogenated tallow glyceride, hydrogenated vegetable oil, hydrolyzed collagen, hydrolyzed elastin, hydrolyzed glycosaminoglycans, hydrolyzed keratin, hydrolyzed soy protein, hydroxylated lanolin, hydroxyproline, isocetyl stearate, isocetyl stearoyl stearate, isodecyl oleate, isopropyl isostearate, isopropyl lanolate, isopropyl myristate, isopropyl palmitate, isopropyl stearate, isostearamide DEA, isostearic acid, isostearyl lactate, isostearyl neopentanoate, jasmine oil (Jasminum officinale), jojoba oil (Buxus chinensis), kelp, kukui nut oil (Aleurites moluccana), lactamide MEA, laneth-16, laneth-10 acetate, lanolin, lanolin acid, lanolin alcohol, lanolin oil, lanolin wax, lavender oil (Lavandula angustifolia), lecithin, lemon oil (Citrus medica limonum), linoleic acid, linolenic acid, macadamia ternifolia nut oil, maltitol, chamomilla recutita (Matricaria) oil, methyl glucose sesquistearate, methylsilanol PCA, mineral oil, mink, mortierella oil, myristyl lactate, myristyl myristate, myristyl propionate, neopentyl glycol dicaprylate/dicaprate, octyldodecanol, octyldodecyl myristate, octyldodecyl stearoyl, octyl hydroxystearate, octyl palmitate, octyl salicylate, octyl stearate, oleic acid, olive oil (Olea europaea), orange oil (Citrus aurantium dulcis), palm oil (Elaeis guineensis), palmitic acid, pantethine, panthenol, panthenyl ether, paraffin, PCA, peach kernel oil (Prunus persica), peanut oil (Arachis hypogaea), pentadecalactone, peppermint oil (Mentha piperita), petrolatum, Phospholipids, Polyamino Sugar Condensate, Polyglyceryl-3 Diisostearate, Potassium Myristate, Potassium Palmitate, Propylene Glycol, Propylene Glycol Dicaprylate/Dicaprate, Propylene Glycol Dioctanoate, Propylene Glycol Dipelargonate, Propylene Glycol Laurate, Propylene Glycol Stearate, Propylene Glycol Stearate SE, PVP, Pyridoxine Dipalmitate, Retinol, Retinyl Palmitate, Rice Bran Oil (Oryza Sativa), RNA, Rosemary Oil (Rosmarinus Officinalis), Rose Oil, Safflower Oil (Carthamus Tinctorius), Sage Oil (Salvia Officinalis), Sandalwood Oil (Santalum Album), Serine, Serum Proteins, Sesame Oil (Sesamum Indicum), Shea Butter (Butyrospermum parkii), silk powder, sodium chondroitin sulfate, sodium hyaluronate, sodium lactate, sodium palmitate, sodium PCA, sodium polyglutamate, soluble collagen, sorbitan laurate, sorbitan oleate, sorbitan palmitate, sorbitan sesquioleate, sorbitan stearate, sorbitol, Glycine soja (soybean) oil, sphingolipids, squalane, squalene, stearamide MEA-stearate, stearic acid, stearoxy dimethicone, stearoxytrimethylsilane, stearyl alcohol, stearyl glycyrrhetinate, stearyl heptanoate, stearyl stearate, Helianthus annuus (sunflower) seed oil, Prunus amygdalus dulcis (sweet almond) oil, beeswax synthetic, tocopherol, tocopheryl acetate, tocopheryl linoleate, tribehenin, tridecyl neopentanoate, tridecyl stearate, triethanolamine, tristearin, urea, vegetable oil, water, waxes, wheat germ oil (Triticum vulgare), and ylang ylang oil (Cananga odorata), and a combination thereof.

In various embodiments, the leave-in hair treatment compositions include at least one hydroxyalkyl urea. Non-limiting examples include N-(2-hydroxyethyl) urea, N-(2-hydroxypropyl) urea, N-(3-hydroxypropyl) urea, N-(2,3-dihydroxypropyl) urea, N-(2,3,4,5,6-pentahydroxyhexyl) urea, N-methyl-N-(1,3,4,5,6-pentahydroxy-2-hexyl) urea, N-methyl-N'-(1-hydroxy-2-methyl-2-propyl) urea, N-(1-hydroxy-2-methyl-2-propyl) urea, N-(1,3-dihydroxy-2-propyl) urea; N-(trishydroxymethyl) urea, N-ethyl-N'-(2-hydroxyethyl) urea, N,N-bis-(2-hydroxyethyl) urea, N,N'-bis-(2-hydroxyethyl) urea, N, N-bis-(2-hydroxypropyl) urea, N,N'-bis-(2-hydroxypropyl) urea, N,N-bis-(2-hydroxyethyl)-N'-propyl urea, N,N-bis-(2-hydroxypropyl)-N'-(2-hydroxyethyl) urea, N-tert-butyl-N'-(2-hydroxyethyl)-N'-(2-hydroxypropyl) urea, N-(1,3-dihydroxy-2-propyl)-N'-(2-hydroxyethyl) urea, N,N-bis-(2-hydroxyethyl)-N', N'-dimethyl urea, N,N,N',N'-tetrakis-(2-hydroxyethyl) urea, N',N'-bis-(2-hydroxyethyl)-N',N'-bis-(2-hydroxypropyl) urea. In a preferred embodiment, the leave-in hair treatment composition includes N-(2-hydroxyethyl) urea (hydroxyethyl urea).

The total amount of the one or more humectants, if present, will vary. However, in various embodiments, the leave-in hair treatment composition includes about 0.1 to about 10% by weight of the one or more humectants, based on the total weight of the leave-in hair treatment composition. In other embodiments, the leave-in hair treatment composition includes from about 0.1 to about 8 wt. %, about 0.1 to about 5 wt. %, about 0.1 to about 4 wt. %, about 0.5 to about 10 wt. %, about 0.5 to about 8 wt. %, about 0.5 to about 5 wt. %, about 0.5 to about 4 wt. %, about 1 to about 10 wt. %, about 1 to about 8 wt. %, about 1 to about 5 wt. %, or about 1 to about 4 wt. %, based on the total weight of the leave-in hair treatment composition.

(i) Miscellaneous ingredients

In various embodiments, the leave-in hair treatment composition includes one or more miscellaneous ingredients. Miscellaneous ingredients are ingredients that are compatible with the leave-in hair treatment composition and do not disrupt or materially affect the fundamental and novel properties of the compositions. Non-limiting examples of ingredients include preservatives, fragrances, pH adjusters, salts, chelating agents, buffers, antioxidants, flavonoids, vitamins, botanical extracts, UV filtering agents, proteins, protein hydrolysates and/or isolates, fillers, composition colorants, cationic polymers, non-oil fatty compounds (fatty compounds that are solid at room temperature), etc.

For the purposes of this disclosure, non-oil fatty compounds are fatty compounds that are solid at room temperature. Non-limiting examples include waxes, fatty acids, and fatty alcohols that are solid at room temperature, etc. The leave-in hair treatment compositions of this disclosure optionally include one or more non-oil fatty compounds (one or more fatty compounds that are solid at room temperature). Although the fatty compounds are solid at room temperature, when combined with other components, for example, when combined in the hair treatment compositions of this disclosure, the compounds are generally not solid because they solubilize or interact with the other compounds in the composition.

For the purposes of this disclosure, a "composition colorant" is a compound that colors the composition but does not have an appreciable coloring effect on the hair. That is, the composition colorant is included to provide coloring to the composition for aesthetic appeal, not intended to impart coloring properties to the hair. Hair styling gels, for example, can come in a variety of different colors (e.g., light blue, light pink, etc.), but application of the styling gel to the hair does not change the color of the hair.

In various embodiments, preferred miscellaneous ingredients are selected from preservatives, fragrances, pH adjusters, salts, chelating agents, buffers, composition colorants, fatty compounds that are not oils (solid fatty compounds), and mixtures thereof.

The total amount of the miscellaneous ingredient(s), if present, will vary. However, in various embodiments, the reducing composition includes from about 0.001 to about 10 wt. % of one or more miscellaneous ingredients, based on the total weight of the reducing composition. In other embodiments, the reducing compositions include from about 0.001 to about 5 wt. %, from about 0.001 to about 3 wt. %, from about 0.01 to about 10 wt. %, from about 0.01 to about 5 wt. %, from about 0.01 to about 3 wt. %, from about 0.1 to about 10 wt. %, from about 0.1 to about 5 wt. %, or from about 0.1 to about 3 wt. % of one or more miscellaneous ingredients, based on the total weight of the reducing composition.

pH

The pH of the leave-in hair treatment compositions will vary. However, in various embodiments, the pH of the composition is from about 3 to about 6. In other embodiments, the pH of the compositions is from about 3 to about 5.5, from about 3 to about 5, from about 3 to about 4.5, from about 3 to about 4, from about 3.5 to about 6, from about 3.5 to about 5.5, from about 3.5 to about 5, from about 3.5 to about 4.5, from about 4 to about 6, from about 4 to about 5.5, or from about 4 to about 5.

The compositions of the present disclosure are useful in methods of treating hair. For example, the methods are particularly effective in imparting durability to hair, moisturizing hair, and moisturizing hair. The methods include applying a leave-in hair treatment composition of the present disclosure to hair, and optionally styling the hair. As the name implies, the “leave-in” hair treatment composition remains on the hair.

Viscosity

The viscosity of leave-in hair treatment compositions will vary. However, it is preferred that the viscosity be approximately 100 to 20,000 cps at 25 ^o C measured using a Brookfield DV-LL+ Pro Viscometer using the Helipath T-bar C spindle and a rotation speed of 50 rpm. In other embodiments, the viscosity is about 100 to about 15,000 cps, about 100 to about 10,000 cps, about 100 to about 5,000 cps, about 500 to about 20,000 cps, about 500 to about 15,000 cps, about 500, about 10,000 cps, about 500 to about 5,000 cps, about 1,000 to about 20,000 cps, about 1,000 to about 15,000 cps, about 1,000 to about 10,000 cps, about 1,000 to about 5,000 cps, about 5,000 to about 20,000 cps, about 5,000 to about 15,000 cps, approximately 5,000 to approximately 10,000 cps, approximately 10,000 to approximately 20,000 cps, approximately 10,000 to approximately 15,000 cps, or approximately 15,000 to approximately 20,000 cps at 25 ^o C measured with a Brookfield DV-LL+ Pro viscometer using the Helipath C T-spindle and a rotation speed of 50 rpm.

Preferred embodiments

In various embodiments, the leave-in hair treatment composition comprises or consists of:

(a) about 5 to about 30 weight percent, preferably about 5 to about 25, more preferably about 5 to about 20 weight percent of water;

(b) about 10 to about 40% by weight, more preferably about 10 to about 30% by weight, more preferably about 15 to about 25% by weight of one or more polyols selected from glycerin, ethylene glycol, propylene glycol, butylene glycol, hexylene glycol, pentylene glycol, diethylene glycol, dipropylene glycol, 1,3 propanediol, and a mixture thereof, more preferably glycerin and one or more polyols selected from ethylene glycol, propylene glycol, butylene glycol, hexylene glycol, pentylene glycol, diethylene glycol, dipropylene glycol, 1,3 propanediol, and a mixture thereof, more preferably glycerin and dipropylene glycol;

(c) about 35 to about 75% by weight of one or more oils, preferably about 40 to about 70% by weight, more preferably about 45 to about 65% by weight of one or more oils, preferably at least one hydrocarbon oil and at least one silicone-based oil; more preferably wherein the one or more oils comprise:

(c)(i) about 30 to about 60% by weight, preferably about 35 to about 55% by weight, more preferably about 35 to about 50% by weight of one or more hydrocarbon oils; and

(c)(ii) about 1 to about 25% by weight, preferably about 5 to about 25% by weight, more preferably about 5 to about 20% by weight of one or more silicone-based oils;

(d) at least 0.5% to about 5% by weight, preferably at least 0.5 to about 3% by weight, more preferably about 0.8 to about 3% by weight of one or more non-polymeric, non-thiol C1-C9 mono-, di- and/or tricarboxylic acids, a salt thereof, or a combination thereof, preferably selected from formic acid, acetic acid, lactic acid, propionic acid, butyric acid, gluconic acid, valeric acid, caproic acid, entanthic acid, caprylic acid, pelargonic acid, capric acid, undecylic acid, lauric acid, tridecylic acid, myristic acid, pentadecylic acid, palmitic acid, margaric acid, stearic acid, nonadecylic acid, and arachidic acid, oxalic acid, malonic acid, malic acid, glutaric acid, citraconic acid, succinic acid, adipic acid, tartaric acid, fumaric acid, maleic acid, sebacic acid, azelaic acid, dodecanedioic acid, phthalic acid, isophthalic acid, terephthalic acid and 2,6-naphthalene dicarboxylic acid, citric acid, isocitric acid, aconitric acid, propane-1,2,3-tricarboxylic acid and benzene-1,3,5-tricarboxylic acid, a salt thereof and a combination thereof, more preferably citric acid and optionally one or more other non-polymeric and non-thiol C1-C9 mono-, di- and/or tricarboxylic acids, a salt thereof or a combination thereof;

(e) about 1 to about 10% by weight, preferably about 1 to about 8, more preferably about 1 to about 5% by weight of one or more emulsifiers, preferably one or more silicone-based emulsifiers and one or more non-silicone emulsifiers;

(f) about 0.01 to about 5% by weight, more preferably about 0.1 to about 5% by weight, more preferably about 0.5 to about 3% by weight of one or more thickening agents, preferably one or more polymeric thickening agents, more preferably chosen from polyacrylamides;

(g) optionally, up to about 5% by weight, preferably from about 0.1 to about 5% by weight, more preferably from about 0.5 to about 5% by weight, more preferably from about 1 to about 3% by weight of one or more humectants, preferably wherein at least one or the one or more humectants are selected from hydroxyalkylureas, preferably one or more hydroxyethylureas selected from N-(2-hydroxyethyl)urea, N-(2-hydroxypropyl)urea, N-(3-hydroxypropyl)urea, N-(2,3-dihydroxypropyl)urea, N-(2,3,4,5,6-pentahydroxyhexyl)urea, N-methyl-N-(1,3,4,5,6-pentahydroxy-2-hexyl)urea, N-(1-hydroxy-2-methyl-2-propyl)urea, N-(1-hydroxy-2-methyl-2-propyl) urea, N-(1,3-dihydroxy-2-propyl) urea; N-(trishydroxymethyl) urea, N-ethyl-N'-(2-hydroxyethyl) urea, N,N-bis-(2-hydroxyethyl) urea, N,N'-bis-(2-hydroxyethyl) urea, N,N-bis-(2-hydroxypropyl) urea, N,N'-bis-(2-hydroxypropyl) urea, N,N-bis-(2-hydroxyethyl)-N'-propyl urea, N,N-bis-(2-hydroxypropyl)-N'-(2-hydroxyethyl) urea, N-tert-butyl-N'-(2-hydroxyethyl)-N'-(2-hydroxypropyl) urea, N-(1,3-dihydroxy-2-propyl)-N'-(2-hydroxyethyl) urea, N,N-bis-(2-hydroxyethyl)-N', N'-dimethyl urea, N,N,N',N'-tetrakis-(2-hydroxyethyl) urea, N',N'-bis-(2-hydroxyethyl)-N',N'-bis-(2-hydroxypropyl) urea, more preferably hydroxyethyl urea; and

(h) optionally, up to about 5% by weight, preferably about 0.1 to about 5% by weight, more preferably about 1 to about 5% by weight of one or more miscellaneous ingredients;

wherein the ratio ((a)+(b)) to (c) is from 1:1 to 1:5, preferably from about 1:2 to about 1:5, more preferably from about 1:2 to about 1:4;

the composition is translucent or transparent; and

the composition has a pH of about 3 to about 6.

all weight percentages are relative to a total weight of the composition.

In various embodiments, the leave-in hair treatment composition comprises or consists of:

(a) about 5 to about 30 weight percent, preferably about 5 to about 25, more preferably about 5 to about 20 weight percent of water;

(b) about 10 to about 40% by weight, more preferably about 10 to about 30% by weight, more preferably about 15 to about 25% by weight of one or more polyols selected from glycerin, ethylene glycol, propylene glycol, butylene glycol, hexylene glycol, pentylene glycol, diethylene glycol, dipropylene glycol, 1,3 propanediol, and a mixture thereof, more preferably glycerin and one or more polyols selected from ethylene glycol, propylene glycol, butylene glycol, hexylene glycol, pentylene glycol, diethylene glycol, dipropylene glycol, 1,3 propanediol, and a mixture thereof, more preferably glycerin and dipropylene glycol;

(c) about 35 to about 75% by weight of one or more oils, preferably about 40 to about 70% by weight, more preferably about 45 to about 65% by weight of one or more oils, preferably at least one hydrocarbon oil and at least one silicone-based oil; more preferably wherein the one or more oils comprise:

(c)(i) about 30 to about 60% by weight, preferably about 35 to about 55% by weight, more preferably about 35 to about 50% by weight of one or more hydrocarbon oils, preferably one or more hydrocarbon oils selected from C9-C12 alkane, C10-C13 alkane, C12-C17 alkane, C13-C15 alkane, C14-C17 alkane, C14-C19 alkane, C14-C20 alkane, C14-C22 alkane, C15-C19 alkane, C21-C28 alkane, C17-C23 alkane, C9-C12 isoalkane, C9-C13 isoalkane, C9-C14 isoalkane, C9-C16, C10-C11 isoalkane, C10-C12 isoalkane, C10-C13 isoalkane, isoalkane, C11-C13 isoalkane, C11-C14 isoalkane, C12-C14 isoalkane, C12-C20 isoalkane, C13-C14 isalkane, C13-C16 isoalkane, C14-C16 isoalkane, C15-C19 isoalkane, isododecane, and a mixture thereof;

(c)(ii) about 1 to about 25% by weight, preferably about 5 to about 25% by weight, more preferably about 5 to about 20% by weight of one or more silicone-based oils, preferably selected from polydimethylsiloxane (dimethicone), dimethiconol, amodimethicone, phenyl-modified silicone, silicone block copolymers containing amine or quat groups or other charged or uncharged block copolymers, more preferably a combination of dimethicone and dimethiconol;

(d) at least 0.5% to about 5% by weight, preferably at least 0.5 to about 3% by weight, more preferably about 0.8 to about 3% by weight of one or more non-polymeric, non-thiol C1-C9 mono-, di- and/or tricarboxylic acids, a salt thereof, or a combination thereof, preferably selected from formic acid, acetic acid, lactic acid, propionic acid, butyric acid, gluconic acid, valeric acid, caproic acid, entanthic acid, caprylic acid, pelargonic acid, capric acid, undecylic acid, lauric acid, tridecylic acid, myristic acid, pentadecylic acid, palmitic acid, margaric acid, stearic acid, nonadecylic acid, and arachidic acid, oxalic acid, malonic acid, malic acid, glutaric acid, citraconic acid, succinic acid, adipic acid, tartaric acid, fumaric acid, maleic acid, sebacic acid, azelaic acid, dodecanedioic acid, phthalic acid, isophthalic acid, terephthalic acid and 2,6-naphthalene dicarboxylic acid, citric acid, isocitric acid, aconitric acid, propane-1,2,3-tricarboxylic acid and benzene-1,3,5-tricarboxylic acid, a salt thereof and a combination thereof, more preferably citric acid and optionally one or more other non-polymeric and non-thiol C1-C9 mono-, di- and/or tricarboxylic acids, a salt thereof or a combination thereof;

(e) about 1 to about 10% by weight, preferably about 1 to about 8, more preferably about 1 to about 5% by weight of one or more emulsifiers, preferably one or more silicone-based emulsifiers and one or more non-silicone emulsifiers, more preferably

(e)(i) about 0.1 to about 10 wt. %, more preferably about 0.5 to about 8 wt. %, more preferably about 1 to about 5 wt. %, of one or more silicone-based emulsifiers selected from PEG-10 dimethicone, PEG-12 dimethicone, PEG-14 dimethicone, PEG-17 dimethicone, PPG-12 dimethicone, PPG-17 dimethicone, and their derivatized/functionalized forms such as Bis-PEG/PPG-20/20 dimethicone bis-PEG/PPG-16/16 PEG/PPG-16/16 dimethicone, PEG/PPG-14/4 dimethicone, PEG/PPG-20/20 dimethicone, PEG/PPG-20/23 dimethicone, and perfluorononylethyl carboxydecyl PEG-10 dimethicone, and a combination thereof, preferably PEG-14 dimethicone; and

(e)(ii) about 0.01 to about 8 wt. %, more preferably about 0.1 to about 5 wt. %, more preferably about 0.5 to about 5 wt. % of one or more non-silicone emulsifiers selected from hydrogenated castor oil (e.g., PEG-60 hydrogenated castor oil), oxyethylenated fatty alcohols having an average degree of ethoxylation of from 2 to 29, and a combination thereof;

(f) about 0.01 to about 5% by weight, more preferably about 0.1 to about 5% by weight, more preferably about 0.5 to about 3% by weight of one or more thickening agents, preferably one or more polymeric thickening agents, more preferably chosen from polyacrylamides;

(g) optionally, up to about 5% by weight, preferably from about 0.1 to about 5% by weight, more preferably from about 0.5 to about 5% by weight, more preferably from about 1 to about 3% by weight of one or more humectants, preferably wherein at least one or the one or more humectants are selected from hydroxyalkylureas, preferably one or more hydroxyethylureas selected from N-(2-hydroxyethyl)urea, N-(2-hydroxypropyl)urea, N-(3-hydroxypropyl)urea, N-(2,3-dihydroxypropyl)urea, N-(2,3,4,5,6-pentahydroxyhexyl)urea, N-methyl-N-(1,3,4,5,6-pentahydroxy-2-hexyl)urea, N-(1-hydroxy-2-methyl-2-propyl)urea, N-(1-hydroxy-2-methyl-2-propyl) urea, N-(1,3-dihydroxy-2-propyl) urea; N-(trishydroxymethyl) urea, N-ethyl-N'-(2-hydroxyethyl) urea, N,N-bis-(2-hydroxyethyl) urea, N,N'-bis-(2-hydroxyethyl) urea, N,N-bis-(2-hydroxypropyl) urea, N,N'-bis-(2-hydroxypropyl) urea, N,N-bis-(2-hydroxyethyl)-N'-propyl urea, N,N-bis-(2-hydroxypropyl)-N'-(2-hydroxyethyl) urea, N-tert-butyl-N'-(2-hydroxyethyl)-N'-(2-hydroxypropyl) urea, N-(1,3-dihydroxy-2-propyl)-N'-(2-hydroxyethyl) urea, N,N-bis-(2-hydroxyethyl)-N', N'-dimethyl urea, N,N,N',N'-tetrakis-(2-hydroxyethyl) urea, N',N'-bis-(2-hydroxyethyl)-N',N'-bis-(2-hydroxypropyl) urea, more preferably hydroxyethyl urea; and

(h) optionally, up to about 5% by weight, preferably about 0.1 to about 5% by weight, more preferably about 1 to about 5% by weight of one or more miscellaneous ingredients, preferably one or more miscellaneous ingredients selected from antioxidants, buffers, fragrances, preservatives, solid fatty compounds, composition colorants, fillers, plant extracts, or a combination thereof;

wherein the ratio ((a)+(b)) to (c) is from 1:1 to 1:5, preferably from about 1:2 to about 1:5, more preferably from about 1:2 to about 1:4;

the composition is translucent or transparent; and

the composition has a pH of about 3 to about 6.

all weight percentages are relative to a total weight of the composition.

In various embodiments, the leave-in hair treatment composition comprises or consists of:

(a) about 5 to about 30 weight percent, preferably about 5 to about 25, more preferably about 5 to about 20 weight percent of water;

(b) about 10 to about 40 wt. %, more preferably about 10 to about 30 wt. %, more preferably about 15 to about 25 wt. % of glycerin and one or more additional polyols selected from ethylene glycol, propylene glycol, butylene glycol, hexylene glycol, pentylene glycol, diethylene glycol, dipropylene glycol, 1,3 propanediol, and a mixture thereof, more preferably glycerin and dipropylene glycol;

(c) about 35 to about 75% by weight of one or more oils, preferably about 40 to about 70% by weight, more preferably about 45 to about 65% by weight of oil, wherein the oil comprises or consists of:

(c)(i) about 30 to about 60% by weight, preferably about 35 to about 55% by weight, more preferably about 35 to about 50% by weight of one or more hydrocarbon oils, preferably one or more hydrocarbon oils selected from C9-C12 alkane, C10-C13 alkane, C12-C17 alkane, C13-C15 alkane, C14-C17 alkane, C14-C19 alkane, C14-C20 alkane, C14-C22 alkane, C15-C19 alkane, C21-C28 alkane, C17-C23 alkane, C9-C12 isoalkane, C9-C13 isoalkane, C9-C14 isoalkane, C9-C16, C10-C11 isoalkane, C10-C12 isoalkane, C10-C13 isoalkane, isoalkane, C11-C13 isoalkane, C11-C14 isoalkane, C12-C14 isoalkane, C12-C20 isoalkane, C13-C14 isalkane, C13-C16 isoalkane, C14-C16 isoalkane, C15-C19 isoalkane, isododecane, and a mixture thereof;

(c)(ii) about 1 to about 25 wt. %, preferably about 5 to about 25 wt. %, more preferably about 5 to about 20 wt. % of polydimethylsiloxane (dimethicone), dimethiconol and a combination thereof;

(d) at least 0.5% to about 5% by weight, preferably at least 0.5 to about 3% by weight, more preferably about 0.8 to about 3% by weight of lactic acid, malonic acid, malic acid, tartaric acid, maleic acid, maleic acid, isophthalic acid, citric acid, isocitric acid, aconitric acid, propane-1,2,3-tricarboxylic acid, a salt thereof, and a combination thereof, more preferably citric acid and optionally one or more additional non-polymeric, non-thiol C1-C9 mono-, di- and/or tricarboxylic acids, a salt thereof, or a combination thereof;

(e) about 1 to about 10% by weight, preferably about 1 to about 8, more preferably about 1 to about 5% by weight of emulsifiers, the emulsifiers comprising or consisting of:

(e)(i) about 0.1 to about 10 wt. %, more preferably about 0.5 to about 8 wt. %, more preferably about 1 to about 5 wt. %, of one or more silicone-based emulsifiers selected from PEG-10 dimethicone, PEG-12 dimethicone, PEG-14 dimethicone, PEG-17 dimethicone, PPG-12 dimethicone, PPG-17 dimethicone, and their derivatized/functionalized forms such as Bis-PEG/PPG-20/20 dimethicone bis-PEG/PPG-16/16 PEG/PPG-16/16 dimethicone, PEG/PPG-14/4 dimethicone, PEG/PPG-20/20 dimethicone, PEG/PPG-20/23 dimethicone, and perfluorononylethyl carboxydecyl PEG-10 dimethicone, and a combination thereof, preferably PEG-14 dimethicone; and

(e)(ii) about 0.01 to about 8 wt. %, more preferably about 0.1 to about 5 wt. %, more preferably about 0.5 to about 5 wt. % of one or more non-silicone emulsifiers selected from hydrogenated castor oil (e.g., PEG-60 hydrogenated castor oil), oxyethylenated fatty alcohols having an average degree of ethoxylation of from 2 to 29, and a combination thereof;

(f) about 0.01 to about 5% by weight, more preferably about 0.1 to about 5% by weight, more preferably about 0.5 to about 3% by weight of one or more thickening agents, preferably one or more polymeric thickening agents, more preferably chosen from polyacrylamides;

(g) optionally, up to about 5% by weight, preferably from about 0.1 to about 5% by weight, more preferably from about 0.5 to about 5% by weight, more preferably from about 1 to about 3% by weight of one or more humectants, preferably wherein at least one or the one or more humectants are selected from hydroxyalkylureas, preferably one or more hydroxyethylureas selected from N-(2-hydroxyethyl)urea, N-(2-hydroxypropyl)urea, N-(3-hydroxypropyl)urea, N-(2,3-dihydroxypropyl)urea, N-(2,3,4,5,6-pentahydroxyhexyl)urea, N-methyl-N-(1,3,4,5,6-pentahydroxy-2-hexyl)urea, N-(1-hydroxy-2-methyl-2-propyl)urea, N-(1-hydroxy-2-methyl-2-propyl) urea, N-(1,3-dihydroxy-2-propyl) urea; N-(trishydroxymethyl) urea, N-ethyl-N'-(2-hydroxyethyl) urea, N,N-bis-(2-hydroxyethyl) urea, N,N'-bis-(2-hydroxyethyl) urea, N,N-bis-(2-hydroxypropyl) urea, N,N'-bis-(2-hydroxypropyl) urea, N,N-bis-(2-hydroxyethyl)-N'-propyl urea, N,N-bis-(2-hydroxypropyl)-N'-(2-hydroxyethyl) urea, N-tert-butyl-N'-(2-hydroxyethyl)-N'-(2-hydroxypropyl) urea, N-(1,3-dihydroxy-2-propyl)-N'-(2-hydroxyethyl) urea, N,N-bis-(2-hydroxyethyl)-N', N'-dimethyl urea, N,N,N',N'-tetrakis-(2-hydroxyethyl) urea, N',N'-bis-(2-hydroxyethyl)-N',N'-bis-(2-hydroxypropyl) urea, more preferably hydroxyethyl urea; and

(h) optionally, up to about 5% by weight, preferably about 0.1 to about 5% by weight, more preferably about 1 to about 5% by weight of one or more miscellaneous ingredients, preferably one or more miscellaneous ingredients selected from antioxidants, buffers, fragrances, preservatives, solid fatty compounds, composition colorants, fillers, plant extracts, or a combination thereof;

wherein the ratio ((a)+(b)) to (c) is from 1:1 to 1:5, preferably from about 1:2 to about 1:5, more preferably from about 1:2 to about 1:4;

the composition is translucent or transparent; and

the composition has a pH of about 3 to about 6.

all weight percentages are relative to a total weight of the composition.

Oils

The term "oil" refers to any fatty substance that is in liquid form at room temperature (25°C) and atmospheric pressure.

Non-volatile oils

The non-volatile oils may be chosen in particular from hydrocarbon oils, fluorinated oils and/or non-volatile silicone oils.

• les huiles hydrocarbonées d’origine animale,
• les huiles hydrocarbonées d'origine végétale, telles que les esters de phytostéaryle, tels que l'oléate de phytostéaryle, l'isostéarate de phytostéaryle et le glutamate de lauroyl/octyldodécyl/phytostéaryle, triglycérides formés d'esters d'acides gras du glycérol, en particulier dans lesquels les acides gras peuvent avoir des longueurs de chaîne allant de C4 à C36 et notamment de C18 à C36, ces huiles pouvant être linéaires ou ramifiées, saturées ou insaturées ; ces huiles peuvent notamment être des triglycérides heptanoïques ou octanoïques, huile de karité, huile de luzerne, huile de pavot, huile de courge d'hiver, huile de millet, huile d'orge, huile de quinoa, huile de seigle, huile de bancoulier, huile de passiflore, beurre de karité, huile d'aloe vera, huile d'amande douce, huile de noyau de pêche, huile d'arachide, huile d'argan, huile d'avocat, huile de baobab, huile de bourrache, huile de brocoli, huile de calendula, huile de caméline, huile de canola, huile de carotte, huile de carthame, huile de lin, huile de colza, huile de coton, huile de coco, huile de graines de courge, huile de germe de blé, huile de jojoba, huile de lis, huile de macadamia, huile de maïs, huile de muguet, huile de monoï, huile de noisette, huile de noyau d'abricot, huile de noix, huile d'olive, huile d'onagre, huile de palme, huile de pépins de cassis, huile de pépins de kiwi, huile de pépins de raisin, huile de pistache, huile de courge d'hiver, huile de citrouille, huile de quinoa, huile de rose musquée, huile de sésame, huile de soja, huile de tournesol, huile de ricin et huile de pastèque, et leurs mélanges, ou en variante triglycérides d'acide caprylique/caprique,tels que ceux vendus par la société STÉARINERIES DUBOIS ou ceux vendus sous les noms MIGLYOL 810®, 812® et 818® par la société Dynamit Nobel ;
• les éthers synthétiques contenant de 10 à 40 atomes de carbone, telles que le dicaprylyl éther ;
• les esters synthétiques, par exemple les huiles de formule R1COOR2, dans laquelle R1 représente un résidu d'acide gras linéaire ou ramifié contenant de 1 à 40 atomes de carbone, et R2 représente une chaîne hydrocarbonée, notamment ramifiée, contenant de 1 à 40 atomes de carbone, à condition que R1+R2≥10. Les esters peuvent être choisis en particulier parmi les esters d’acide gras d’alcool, par exemple l’octanoate de cétéaryle, les esters d’alcool isopropylique, tels que le myristate d’isopropyle, le palmitate d’isopropyle, le palmitate d’éthyle, le palmitate de 2-éthylhexyle, le stéarate d’isopropyle, le stéarate d’octyle, les esters hydroxylés, par exemple le lactate d’isostéaryle, l’hydroxystéarate d’octyle, les ricinoléates d’alcool ou de polyalcool, le laurate d’hexyle, les esters d’acide néopentanoïque, par exemple le néopentanoate d’isodécyle, le néopentanoate d’isotridécyle et les esters d’acide isononanoïque, par exemple l’isononanoate d’isononyle et l’isononanoate d’isotridécyle ;
• les esters de polyol et les esters de pentaérythritol, par exemple le tétrahydroxystéarate/tétrastéarate de dipentaérythrityle ;
• les alcools gras liquides à température ambiante, à chaîne carbonée ramifiée et/ou insaturée contenant de 12 à 26 atomes de carbone, par exemple le 2-octyldodécanol, l'alcool isostéarylique et l'alcool oléylique ;
• les acides gras supérieurs en C12-C22, tels que l'acide oléique, l'acide linoléique ou l'acide linolénique, et leurs mélanges ;
• les carbonates de dialkyle, les deux chaînes d’alkyle pouvant être identiques ou différentes, tels que le carbonate de dicaprylyle vendu sous le nom CETIOL CC® par Cognis ; et
• les huiles de masse molaire élevée, en particulier ayant une masse molaire allant d’environ 400 à environ 2000 g/mol et en particulier d’environ 650 à environ 1600 g/mol. En tant qu’huiles de masse molaire élevée qui peuvent être utilisées dans la présente invention, on peut citer en particulier les esters d’acide gras linéaires avec un nombre total de carbone allant de 35 à 70, par exemple le tétrapélargonate de pentaérythrityle, les esters hydroxylés, tels que le triisostéarate de polyglycéryle-2, les esters aromatiques, tels que le trimellitate de tridécyle, un alcool gras en C24-C28 ramifié ou les esters d’acide gras, tels que ceux décrits dans le brevet U.S. No. 6,491,927, et les esters de pentaérythritol, et en particulier le citrate de triisoaryle, le triisostéarate de glycéryle, le tristétradecanoate de glycéryle (2-décyle), le tétraisostéarate de polyglycéryle-2 ou le tétradécyle tétratradecanoate de pentaérythrityle ; les phényl silicones, tels que Belsil PDM1000 de la société Wacker (MM=9000 g/mol), les polydiméthylsilanes non volatils (PDMS), les PDMS comprenant des groupes alkyle ou alcoxy qui sont pendants et/ou à l’extrémité de la chaîne de silicone, ces groupes contenant chacun de 24 atomes de carbone, des phényl silicones, par exemple des phényl triméthicones, des phényl diméthicones, des phényltriméthylsiloxydiphénylsiloxanes, des diphényl diphényldiphényldiphénylsiloxanes et des 2-phényléthyl triméthylsiloxysilicates, des diméthicones ou des phényléthicones triméthicones avec une viscosité inférieure ou égale à 100 cSt, et également des mélanges de ces diverses huiles.

Non-volatile hydrocarbon-based oils which may be mentioned include:

• hydrocarbon oils of animal origin,
• Hydrocarbon oils of plant origin, such as phytostearyl esters, such as phytostearyl oleate, phytostearyl isostearate and lauroyl/octyldodecyl/phytostearyl glutamate, triglycerides formed from fatty acid esters of glycerol, in particular in which the fatty acids may have chain lengths ranging from C4 to C36 and in particular from C18 to C36, these oils being able to be linear or branched, saturated or unsaturated; these oils may in particular be heptanoic or octanoic triglycerides, shea oil, alfalfa oil, poppy oil, winter squash oil, millet oil, barley oil, quinoa oil, rye oil, candlenut oil, passionflower oil, shea butter, aloe vera oil, sweet almond oil, peach kernel oil, peanut oil, argan oil, avocado oil, baobab oil, borage oil, broccoli oil, calendula oil, camelina oil, canola oil, carrot oil, safflower oil, linseed oil, rapeseed oil, cottonseed oil, coconut oil, pumpkin seed oil, wheat germ oil, jojoba oil, lily oil, macadamia oil, corn oil, lily of the valley oil, monoi oil, hazelnut oil, apricot kernel oil, walnut oil, olive oil, evening primrose oil, palm oil, blackcurrant seed oil, kiwi seed oil, grape seed oil, pistachio oil, winter squash oil, pumpkin oil, quinoa oil, rosehip oil, sesame oil, soybean oil, sunflower oil, castor oil and watermelon oil, and mixtures thereof, or alternatively caprylic/capric acid triglycerides, such as those sold by the company STEARINERIES DUBOIS or those sold under the names MIGLYOL 810®, 812® and 818® by the company Dynamit Nobel;
• synthetic ethers containing 10 to 40 carbon atoms, such as dicaprylyl ether;
• synthetic esters, for example oils of formula R1COOR2, in which R1 represents a linear or branched fatty acid residue containing from 1 to 40 carbon atoms, and R2 represents a hydrocarbon chain, in particular branched, containing from 1 to 40 carbon atoms, provided that R1+R2≥10. The esters may be chosen in particular from alcohol fatty acid esters, for example cetearyl octanoate, isopropyl alcohol esters, such as isopropyl myristate, isopropyl palmitate, ethyl palmitate, 2-ethylhexyl palmitate, isopropyl stearate, octyl stearate, hydroxylated esters, for example isostearyl lactate, octyl hydroxystearate, alcohol or polyalcohol ricinoleates, hexyl laurate, neopentanoic acid esters, for example isodecyl neopentanoate, isotridecyl neopentanoate and isononanoic acid esters, for example isononyl isononanoate and isononanoate. isotridecyl;
• polyol esters and pentaerythritol esters, e.g. dipentaerythrityl tetrahydroxystearate/tetrastearate;
• fatty alcohols which are liquid at room temperature, with a branched and/or unsaturated carbon chain containing from 12 to 26 carbon atoms, for example 2-octyldodecanol, isostearyl alcohol and oleyl alcohol;
• higher C12-C22 fatty acids, such as oleic acid, linoleic acid or linolenic acid, and mixtures thereof;
• dialkyl carbonates, the two alkyl chains being able to be identical or different, such as dicaprylyl carbonate sold under the name CETIOL CC® by Cognis; and
• high molar mass oils, in particular having a molar mass ranging from about 400 to about 2000 g/mol and in particular from about 650 to about 1600 g/mol. As high molar mass oils which can be used in the present invention, mention may be made in particular of linear fatty acid esters with a total carbon number ranging from 35 to 70, for example pentaerythrityl tetrapelargonate, hydroxylated esters, such as polyglyceryl-2 triisostearate, aromatic esters, such as tridecyl trimellitate, a branched C24-C28 fatty alcohol or fatty acid esters, such as those described in U.S. Patent No. 6,491,927, and pentaerythritol esters, and in particular triisoaryl citrate, glyceryl triisostearate, glyceryl (2-decyl) tristetradecanoate, polyglyceryl-2 tetraisostearate or pentaerythrityl tetradecyl tetradecanoate; phenyl silicones, such as Belsil PDM1000 from Wacker (MM=9000 g/mol), non-volatile polydimethylsilanes (PDMS), PDMS comprising alkyl or alkoxy groups which are pendant and/or at the end of the silicone chain, these groups each containing 24 carbon atoms, phenyl silicones, for example phenyl trimethicones, phenyl dimethicones, phenyltrimethylsiloxydiphenylsiloxanes, diphenyl diphenyldiphenyldiphenylsiloxanes and 2-phenylethyl trimethylsiloxysilicates, dimethicones or phenylethicone trimethicones with a viscosity of less than or equal to 100 cSt, and also mixtures of these various oils.

Silicone based oils

Useful silicone oils include, but are not limited to, polyorganosiloxanes, polyalkylsiloxanes, polyarylsiloxanes, polyalkarylsiloxanes, polyestersiloxanes and a mixture thereof. Non-limiting examples include dimethicone, cyclomethicone (cyclopentasiloxane), amodimethicone, trimethyl silyl amodimethicone, phenyl trimethicone, trimethyl siloxy silicate, polymethylsilsesquioxane and a mixture thereof.

In some cases, the compositions include one or more silicones selected from the group consisting of polydimethylsiloxanes (dimethicones), polydiethylsiloxanes, polydimethylsiloxanes having terminal hydroxyl groups (dimethiconols), polymethylphenylsiloxanes, phenylmethylsiloxanes, amino-functional polydimethylsiloxane (amodimethicone), nonionic dimethicone copolyols, dimethicone copolyol esters, dimethicone copolyol quaternium nitrogen-containing compounds, dimethicone copolyol phosphate esters, and mixtures thereof. Particularly preferred silicones include dimethicone, dimethiconol, amodimethicone, and a mixture thereof.

The compositions may include one or more silicone oils, for example one or more non-phenyl silicone oils and/or one or more phenyl silicone oils. The silicone oil may be non-polar. An "non-polar silicone oil" is intended to mean a silicone oil that does not comprise any ionic or ionizable groups, and preferably does not comprise any oxyalkylene (C ₂ -C ₄ ) unit(s) (preferably oxyethylene, oxypropylene) or glycerol unit(s).

Representative examples of such non-volatile non-phenyl silicone oils include polydimethylsiloxanes; alkyl dimethicones, vinylmethyl methicones, as well as silicones modified with aliphatic groups and/or functional groups such as hydroxyl, thiol and/or amine groups. The non-volatile non-phenyl silicone oil is preferably selected from non-volatile dimethicone oils. These oils may in particular be selected from the following non-volatile oils:

- polydimethylsiloxanes (PDMS),

- PDMS comprising aliphatic groups, in particular alkyl or alkoxy groups, which are pendant and/or at the end of the silicone chain, these groups each comprising from 2 to 24 carbon atoms. As an example, mention may be made of cetyldimethicone marketed under the commercial reference Abil Wax 9801 from Evonik Goldschmidt,

- PDMS comprising aliphatic groups or functional groups such as hydroxyl, thiol and/or amine groups,

- polyalkylmethylsiloxanes substituted by functional groups such as hydroxyl, thiol and/or amine groups,

- polysiloxanes modified with fatty acids, fatty alcohols or polyoxyalkylenes and their mixtures.

Preferably, these non-volatile non-phenyl silicone oils are chosen from polydimethylsiloxanes; alkyl dimethicones and also PDMS comprising aliphatic groups, in particular C ₂ - C _{24 alkyl groups,} and/or functional groups such as hydroxyl, thiol and/or amine groups.

The non-phenyl silicone oil can be chosen in particular from silicones of the following formula:

in which:

R ₁ , R ₂ , R ₅ and R ₆ are, together or separately, an alkyl radical containing from 1 to 6 carbon atoms,

R ₃ and R ₄ are, together or separately, an alkyl radical containing from 1 to 6 carbon atoms, a vinyl radical, an amine radical or a hydroxyl radical,

X is an alkyl radical containing from 1 to 6 carbon atoms, a hydroxyl radical or an amine radical,

n and p are integers chosen so as to have a fluid compound, in particular one whose viscosity at 25 ^o C is between 9 centistokes (cSt) and 800,000 (cSt).

As non-volatile non-phenyl silicone oils which can be used according to the invention, mention may be made of those for which:

- the substituents R ₁ to R ₆ and X represent a methyl group, and p and n are such that the viscosity is 500,000 cst at 25°C, for example the product marketed under the name SE30 by the company General Electric, the product marketed under the name AK 500,000 by the company Wacker, the product marketed under the name Mirasil DM 500,000 by the company Bluestar and the product marketed under the name Dow Corning 200 Fluid 500,000 cst by the company Dow Corning,

- the substituents R ₁ to R ₆ and X represent a methyl group, and p and n are such that the viscosity is 60,000 cst at 25°C, for example the product marketed under the name Dow Corning 200 Fluid 60,000 CS by the company Dow Corning, and the product marketed under the name Wacker Belsil DM 60,000 by the company Wacker,

- the substituents R ₁ to R ₆ and X represent a methyl group, and p and n are such that the dynamic viscosity is 100 cst or 350 cst, for example the products sold respectively under the names Belsil DM100 and Dow Corning 200 Fluid 350 CS by the company Dow Corning,

- the substituents R ₁ to R ₆ represent a methyl group, the group X represents a hydroxyl group, and n and p are such that the viscosity is 700 cst, for example the product marketed under the name Baysilone Fluid T0.7 by the company Momentive.

The total amount of silicones in the cleaning compositions may vary but is typically from about 0.1 to about 10% by weight, based on the total weight of the cleaning composition. In some cases, the total amount of silicones may be from about 0.1 to about 8% by weight, from about 0.1 to about 5% by weight, from about 0.5 to about 10% by weight, from about 0.5 to about 8% by weight, or from about 0.5 to about 5% by weight, based on the total weight of the cleaning composition.

Emulsifiers

Emulsifiers are well known in the art and include amphoteric, anionic, cationic or nonionic emulsifiers, used alone or in admixture, and optionally with a co-emulsifier. The emulsifiers are appropriately selected depending on the emulsion to be obtained.

Non-silicone emulsifiers

Nonionic emulsifiers (also called nonionic surfactants) are well-known compounds in their own right (see, for example , in this regard, “Handbook of Surfactants” by MR Porter, Blackie & Son publishers (Glasgow and London), 1991, pages 116-178), which is hereby incorporated by reference in its entirety.

The nonionic emulsifiers may be, for example, chosen from alcohols, alpha-diols, alkylphenols and fatty acid esters, these compounds being ethoxylated, propoxylated or glycerolated and comprising at least one fatty chain comprising, for example, from 8 to 18 carbon atoms, knowing that the number of ethylene oxide or propylene oxide groups may range from 2 to 50, and the number of glycerol groups from 1 to 30. Maltose derivatives may also be mentioned. Non-limiting examples include copolymers of ethylene oxide and/or propylene oxide; condensates of ethylene oxide and/or propylene oxide with fatty alcohols; polyethoxylated fatty amides comprising, for example, from 2 to 30 moles of ethylene oxide; polyglycerolated fatty amides comprising, for example, from 1.5 to 5 glycerol groups, such as from 1.5 to 4; ethoxylated fatty acid esters of sorbitan comprising from 2 to 30 moles of ethylene oxide; ethoxylated oils of plant origin; fatty acid esters of sucrose; fatty acid esters of polyethylene glycol; polyethoxylated fatty acid mono or diesters of alkylpolyglycosides (C ₆ -C ₂₄ ) of glycerol; N-alkylglucamine derivatives (C ₆ -C ₂₄ ), amine oxides such as alkylamine oxides (C ₁₀ -C ₁₄ ) or N-acylaminopropylmorpholine oxides (C ₁₀ -C ₁₄ ) and mixtures thereof.

The nonionic emulsifiers may preferably be chosen from polyoxyalkylenated or polyglycerolated nonionic surfactants. The oxyalkylene units are more particularly oxyethylene or oxypropylene units, or a combination of the latter, and are preferably oxyethylene units.

Examples of oxyalkylenated nonionic emulsifiers that may be mentioned include: oxyalkylenated, saturated or unsaturated, linear or branched, alkylphenols (C ₈ -C ₂₄ ), oxyalkylenated, saturated or unsaturated, linear or branched, C ₈ -C ₃₀ alcohols, oxyalkylenated C ₈ -C ₃₀ amides, esters of saturated or unsaturated, linear or branched, C ₈ -C _{30 acids and polyethylene glycols, polyoxyalkylenated esters of saturated or unsaturated, linear or branched, C 8 -C 30 acids and} sorbitol, saturated or unsaturated, oxyalkylenated vegetable oils, ethylene oxide and/or propylene oxide condensates, among others, alone or in mixtures.

The emulsifiers preferably contain a number of moles of ethylene oxide and/or propylene oxide of between 2 and 100 and most preferably between 2 and 50.

In accordance with a preferred embodiment of the invention, the oxyalkylenated emulsifiers are chosen from C ₈ -C ₃₀ oxyethylenated alcohols.

Examples of ethoxylated fatty alcohols (or C ₈ -C ₃₀ alcohols) that may be mentioned include adducts of ethylene oxide with lauryl alcohol, especially those containing from 9 to 50 oxyethylene groups and more particularly those containing from 10 to 25 oxyethylene groups (laureth-10 to laureth-25); adducts of ethylene oxide with behenyl alcohol, especially those containing from 9 to 50 oxyethylene groups (Beheneth-9 to Beheneth-50); adducts of ethylene oxide with cetearyl alcohol (mixture of cetyl alcohol and stearyl alcohol), especially those containing from 10 to 30 oxyethylene groups (Ceteareth-10 to Ceteareth-30); adducts of ethylene oxide with cetyl alcohol, in particular those containing from 10 to 30 oxyethylene groups (Ceteth-10 to Ceteth-30); adducts of ethylene oxide with stearyl alcohol, in particular those containing from 10 to 30 oxyethylene groups (Steareth-10 to Steareth-30); adducts of ethylene oxide with isostearyl alcohol, in particular those containing from 10 to 50 oxyethylene groups (Isosteareth-10 to Isosteareth-50); and mixtures thereof.

As examples of polyglycerolated nonionic emulsifiers, _C8 - _C40 polyglycerolated alcohols are preferably used.

In particular, _C8 - _C40 polyglycerolated alcohols correspond to the following formula:

RO-[CH ₂ -CH(CH ₂ OH)-O] _m -H or RO-[CH(CH ₂ OH)-CH ₂ O] _m -H

in which R represents a linear or branched _C8 - _C40 and preferably _C8 - _C30 alkyl or alkenyl radical, and m represents a number ranging from 1 to 30 and preferably from 1.5 to 10.

Examples of compounds suitable in the context of the invention include lauryl alcohol containing 4 moles of glycerol (INCI name: Polyglyceryl-4 Lauryl Ether), lauryl alcohol containing 1.5 moles of glycerol, oleyl alcohol containing 4 moles of glycerol (INCI name: Polyglyceryl-4 Oleyl Ether), oleyl alcohol containing 2 moles of glycerol (INCI name: Polyglyceryl-2 Oleyl Ether), cetearyl alcohol containing 2 moles of glycerol, cetearyl alcohol containing 6 moles of glycerol, oleocetyl alcohol containing 6 moles of glycerol, and octadecanol containing 6 moles of glycerol.

Alcohol can represent a mixture of alcohols in the same way that the value of m represents a statistical value, meaning that in a commercial product several species of polyglycerolated fatty alcohol can coexist as a mixture.

According to one of the embodiments according to the present invention, the nonionic emulsifiers may be chosen from polyol esters with saturated or unsaturated chain fatty acids containing for example from 8 to 24 carbon atoms, preferably from 12 to 22 carbon atoms, and their alkoxylated derivatives, preferably with an alkylene oxide number of 10 to 200, and better still from 10 to 100, such as glyceryl esters of one or more C ₈ -C ₂₄ fatty acids, preferably C ₁₂ -C ₂₂ , and their alkoxylated derivatives, preferably with an alkylene oxide number of 10 to 200, and more preferably from 10 to 100; polyethylene glycol esters of one or more C ₈ -C ₂₄ fatty acids, preferably C ₁₂ -C ₂₂ , and their alkoxylated derivatives, preferably with a number of alkylene oxides of 10 to 200, and better still of 10 to 100; sorbitol esters of one or more C ₈ -C ₂₄ fatty acids, preferably C ₁₂ -C ₂₂ , and their alkoxylated derivatives, preferably with a number of alkylene oxides of 10 to 200, and more preferably of 10 to 100; sugar esters (sucrose, glucose, alkylglycose) of one or more C ₈ -C ₂₄ fatty acids, preferably C ₁₂ -C ₂₂ fatty acids, and their alkoxylated derivatives, preferably with a number of alkylene oxides of 10 to 200, and better still of 10 to 100; fatty alcohol ethers; sugar ethers of one or more C ₈ -C ₂₄ fatty alcohols, preferably C ₁₂ -C ₂₂ fatty alcohols; and a mixture thereof.

Examples of ethoxylated fatty esters that may be mentioned include adducts of ethylene oxide with esters of lauric acid, palmitic acid, stearic acid or behenic acid, and a mixture thereof, especially those containing from 9 to 100 oxyethylene groups, such as PEG-9 to PEG-50 laurate; PEG-9 to PEG-50 palmitate; PEG-9 to PEG-50 stearate; PEG-9 to PEG-50 palmitostearate; PEG-9 to PEG-50 behenate; polyethylene glycol 100 EO monostearate and a mixture thereof.

As glyceryl esters of fatty acids, mention may be made in particular of glyceryl stearate (glyceryl mono-, di- and/or tristearate) (glyceryl stearate) or glyceryl ricinoleate and a mixture thereof.

As glyceryl esters of _C8 - _C24 alkoxylated fatty acids, mention may be made, for example, of polyethoxylated glyceryl stearate (glyceryl mono-, di- and/or tristearate) such as PEG-20 glyceryl stearate.

Mixtures of these emulsifiers, such as for example the product containing glyceryl stearate and PEG-100 stearate, marketed under the name ARLACEL 165 by Croda, and a product containing glyceryl stearate (glyceryl mono- and distearate) and potassium stearate, may also be used.

The sorbitol esters of C ₈ -C ₂₄ fatty acids and their alkoxylated derivatives may be chosen from sorbitan palmitate, sorbitan trioleate and my alkoxylated sorbitan fatty acid esters containing for example from 20 to 100 EO, such as for example polyethylene sorbitan trioleate (polysorbate 85) or the compounds marketed under the trade names Tween 20 or Tween 60 by Croda.

As fatty acid esters of glucose or alkylglucose, in particular glucose palmitate, alkylglucose sesquistearates such as methylglucose sesquistearate, alkylglucose palmitates such as methylglucose or ethylglucose palmitate, fatty esters of methylglucoside and more particularly the diester of methylglucoside and oleic acid (methylglucose dioleate), the mixed ester of methylglucoside and the mixture of oleic acid/hydroxystearic acid (methylglucose dioleate/hydroxystearate), the ester of methylglucoside and isostearic acid (methylglucose isostearate), the ester of methylglucoside and lauric acid (methylglucose laurate), the mixture of monoester and diester of methylglucoside and isostearic acid (methylglucose sesquiisostearate), the mixture of monoester and diester of methylglucoside and stearic acid (methylglucose sesquistearate) and in particular the product marketed under the name Glucate SS by Lubrizol, as well as their mixtures may be cited.

Examples of ethoxylated ethers of fatty acids and glucose or alkylglucose include ethoxylated ethers of fatty acids and methylglucose, and in particular polyethylene glycol ether of the diester of methylglucose and stearic acid with approximately 20 moles of ethylene oxide (PEG-20 methyl glucose distearate) such as the product marketed under the name Glucam E-20 distearate by Lubrizol, polyethylene glycol ether of the mixture of monoester and diester of methyl glucose and stearic acid with approximately 20 moles of ethylene oxide (PEG-20 methyl glucose sesquistearate) and in particular the product marketed under the name Glucamate SSE-20 by Lubrizol and their mixture.

Examples of sucrose esters include sucrose palmitostearate, sucrose stearate and sucrose monolaurate.

As sugar ethers, alkylpolyglucosides may be used, for example decylglucoside such as the product marketed under the name MYDOL 10 by Kao Chemicals, the product marketed under the name PLATAREN 2000 by BASF, and the product marketed under the name ORAMIX NS 10 by Seppic, caprylyl/capryl glucoside such as the product marketed under the name ORAMIX CG 110 by Seppic or under the name LUTENSOL GD 70 by BASF, laurylglucoside such as the products marketed under the names PLANTAREN 1200 N and PLANTACARE 1200 by BASF, coco-glucoside such as the product marketed under the name PLANTACARE 818/UP by BASF, cetostearyl glucoside optionally mixed with cetostearyl alcohol, marketed for example under the name MONTANOV 68 by Seppic, under the name TEGO-CARE CG90 by Evonik, arachidyl glucoside, for example in the form of the mixture of arachidyl and behenyl alcohols and arachidyl glucoside marketed under the name MONTANOV 202 by Seppic, cocoylethylglucoside, for example in the form of the mixture (35/65) with cetyl and stearyl alcohols, marketed under the name MONTANOV 82 by Seppic, and a mixture of the latter may in particular be mentioned.

Mixtures of glycerides of alkoxylated vegetable oils such as mixtures of ethoxylated palm (200 EO) and copra (7 EO) glycerides may also be mentioned.

The nonionic emulsifiers may be selected from the group consisting of PEG-7 glyceryl cocoate, PEG-20 methylglucoside sesquistearate, PEG-20 glyceryl triisostearate, PG-5 dioleate, PG-4 diisostearate, PG-10 isostearate, PEG-8 isostearate and PEG-60 hydrogenated castor oil.

Mixtures of these oxyethylenated derivatives of fatty alcohols and fatty esters can also be used.

In some cases, the nonionic emulsifier is a fatty alkanolamide. Non-limiting examples of fatty alkanolamides that may be used include cocamide MEA, cocamide DEA, sojamide DEA, lauramide DEA, oleamide MIPA, stearamide MEA, myristamide DEA, stearamide DEA, oleylamide DEA, tallowamide DEA, lauramide MIPA, tallowamide MEA, isostearamide DEA, isostearamide MEA, and a mixture thereof.

Silicone-based emulsifiers

In some cases, the one or more emulsifiers include an organosiloxane emulsifier, including crosslinked organosiloxane emulsifiers. For example, the compositions may include one or more crosslinked organosiloxane emulsifiers selected from the group consisting of dimethicone/PEG/PPG 15 dimethicone crosslinked polymer, PEG-10 dimethicone crosslinked polymer, PEG-10/15 dimethicone crosslinked polymer, PEG-15 dimethicone crosslinked polymer, polyglycerin-3 dimethicone crosslinked polymer, PPG-20 dimethicone crosslinked polymer, dimethiconol/methylsilanol/silicate crosslinked polymer; dimethiconol/silicate crosspolymer, lauryl dimethicone PEG-15 crosspolymer, lauryl dimethicone polyglycerin-3 crosspolymer, PEG-8 dimethicone polysorbate-20 crosspolymer, dimethicone/vinyl dimethicone PEG-10 crosspolymer, lauryl dimethicone PEG-10 crosspolymer, lauryl dimethicone PEG-15 crosspolymer, laurylpolydimethylsiloxyethyl PEG-15 crosspolymer.

In another embodiment, the compositions include one or more linear organosiloxane emulsifiers selected from the group consisting of cyclotetrasiloxane (and) cyclopentasiloxane (and) PEG/PPG-18 dimethicone, cyclopentasiloxane (and) PEG/PPG-18/18 dimethicone; PEG/PPG-18/18 dimethicone; lauryl PEG/PPG-18/18 methicone; cetyl PEG/PPG-14/14 dimethicone; bis-cetyl PEG/PPG-14/14 dimethicone; cetyl PEG/PPG-10/1 dimethicone; PEG-11 methyl ether dimethicone; PEG/PPG-20/22 butyl ether dimethicone; PEG-9 dimethicone; PEG-3 dimethicone; PEG-10 methyl ether dimethicone; PEG-10 dimethicone; lauryl PEG-9 polymethylsiloxyethyl dimethicone.

The usable oxyalkylenated organosiloxane emulsifier includes the following:

An oxyalkylenated organosiloxane emulsifier having the general formula:

where p is between 0 and 40 (the range including all numbers between and subranges such as 2, 3, 4, 13, 14, 15, 16, 17, 18, etc.), and PE is (-C ₂ H ₄ O) _a -(-C ₃ H ₆ O) _b -H where a is 0-25, b is 0-25 provided that a and b cannot be 0 simultaneously, x, y and z are each independently between 0 and 1 million provided that x and y cannot be 0 simultaneously. In some cases, x, y, z, a, and b are such that the molecular weight of the polymer is from about 5,000 to about 500,000, from about 10,000 to 100,000, or is about 50,000, and the polymer is generically referred to as dimethicone copolyol. In some cases, p is such that the long chain alkyl is cetyl or lauryl, and the compound is generically referred to as cetyl dimethicone copolyol or lauryl dimethicone copolyol, respectively. In some cases, the number of ethylene oxide or propylene oxide repeating units in the polymer is also specified, such as a dimethicone copolyol also referred to as PEG-15/PPG-10 dimethicone, which refers to a dimethicone having substituents containing 15 ethylene glycol units and 10 propylene glycol units on the siloxane backbone. It is also possible for one or more methyl groups in the general structure above to be substituted with a longer chain alkyl (e.g., ethyl, propyl, butyl...) or ether, such as methyl ether, ethyl ether, propyl ether, butyl ether, and the like.

An oxyalkylenated organosiloxane emulsifier having the general formula:

wherein each n is independently from 0-100 provided that there is at least one PE radical. In some instances, wherein each n is independently from about 2 to 30, and PE( _-C2H4O ) _a -(- _C3H6O ) _{b -} H wherein a is from 0-25, b is from 0-25 provided that a and b cannot simultaneously be 0; and wherein w, x, y and z are each independently from 0 to 1,000,000 provided that there is at least one PE. _In some embodiments, the organosiloxane emulsifier is lauryl PEG-9 Polydimethylsiloxyethyl Dimethicone. The oxyalkylenated organosiloxane emulsifiers disclosed in US 9,095,543 are useful in the present compositions. US 9,095,543 is incorporated herein by reference in its entirety.

Other examples of organosiloxane emulsifiers include those with the C.T.F.A. names Bis-Butyldimethicone Polyglyceryl-3; Bis-PEG/PPG-14/14 Dimethicone; Bis-butyldimethicone Polyglyceryl-3; Bis-isobutyl PEG/PPG-10/7 Dimethicone copolymer; Bis-PEG/PPG-18/6 Dimethicone; Bis-PEG/PPG-20/20 Dimethicone; Bis-PEG/PPG-16/16 PEG/PPG-16/16 Dimethicone; Bis(PPG-7 Undeceneth-21-Dimethicone; Cetyl Dimethicone PEG-7 Acetate; Cetyl PEG-8 Dimethicone; Cetyl PEG/PPG-15/16 Butyl Ether Dimethicone; Cetyl PEG/PPG-15/15 Butyl Ether Dimethicone; Cetyl PEG/PPG-7/3 Dimethicone; Cetyl PEG/PPG-10/1 Dimethicone PEG-15 Acetate; Dimethicone PEG-7 Phosphate; Dimethicone PEG-7/4 Phosphate; PEG-10 Phosphate; Isopolyglyceryl-3 Dimethicone; Isopolyglyceryl-3 Dimethiconol; Isostearyl Carboxyldecyl PEG-8 Dimethicone; Lauryl Methicone PEG-10 Phosphate; Lauryl PEG-8 Dimethicone; Lauryl PEG-10 Methyl Ether Dimethicone; Lauryl PEG/PPG-18/18 Methicone; PEG-6 Methyl Ether Dimethicone; PEG-7 Methyl Ether Dimethicone; PEG-9 Methyl Ether Dimethicone; PEG-10 Methyl Ether Dimethicone; PEG-11 Methyl Ether Dimethicone; PEG-11 Methyl Ether Dimethicone; PEG-32 Methyl Ether Dimethicone; PEG-PEG/PPG-28/21 Acetate Dimethicone; PEG/PPG-22/22 Butyl Ether Dimethicone; PEG/PPG-23/23 Butyl Ether Dimethicone; PEG/PPG-24/18 Butyl Ether Dimethicone; PEG/PPG-3/10 Dimethicone; PEG/PPG-4/12 Dimethicone; PEG/PPG-6/11 Dimethicone; PEG/PPG-8/14 Dimethicone; PEG/PPG-12/16 Dimethicone; PEG/PPG-12/18 Dimethicone; PEG/PPG-14/4 Dimethicone; PEG/PPG-15/5 Dimethicone; PEG/PPG-15/15 Dimethicone; PEG/PPG-16/2 Dimethicone; PEG/PPG-16/8 Dimethicone; PEG/PPG-17/18 Dimethicone; PEG/PPG-18/12 Dimethicone; PEG/PPG-19/19 Dimethicone; PEG/PPG-20/6 Dimethicone; PEG/PPG-20/15 Dimethicone; PEG/PPG-20/20 Dimethicone; PEG/PPG-20/29 Dimethicone; PEG/PPG-22/23 Dimethicone; PEG/PPG-22/24 Dimethicone; PEG/PPG-25/25 Dimethicone; PEG/PPG-27/27 Dimethicone; PEG/PPG-30/10 Dimethicone; PEG/PPG-10/3 Oleyl Ether Dimethicone; PEG-8 trisiloxane; Polyglyceryl-3 Polydimethylsiloxyethyl Dimethicone; PPG-12 Butyl Ether Dimethicone; Quaternium-17 Silicone; TEA-Dimethicone PEG-7 Phosphate; or their mixtures.

Other examples of commercial linear organosiloxane emulsifiers are those sold by Dow Corning under the trade name Dow Corning 3225C Formulation Aid having the CTFA name cyclotetrasiloxane (and) cyclopentasiloxane (and) PEG/PPG-18 dimethicone; or 5225C Formulation Aid, having the CTFA name cyclopentasiloxane (and) PEG/PPG-18/18 dimethicone; or Dow Corning 190 Surfactant having the CTFA name PEG/PPG-18/18 dimethicone; or Dow Corning 193 Fluid, Dow Corning 5200 having the CTFA name lauryl PEG/PPG-18/18 methicone; or Abil EM 90 having the CTFA name cetyl PEG/PPG-14/14 dimethicone sold by Goldschmidt; or Abil EM 97 having the CTFA name bis-cetyl PEG/PPG-14/14 dimethicone sold by Goldschmidt; or Abil WE 09 having the CTFA name cetyl PEG/PPG-10/1 dimethicone in a mixture also containing polyglyceryl-4 isostearate and hexyl laurate; or KF-6011 sold by Shin-Etsu Silicones having the CTFA name PEG-11 methyl ether dimethicone; KF-6012 sold by Shin-Etsu Silicones having the CTFA name PEG/PPG-20/22 butyl ether dimethicone; or KF-6013 sold by Shin-Etsu Silicones having the CTFA name PEG-9 dimethicone; or KF-6015 sold by Shin-Etsu Silicones having the CTFA name PEG-3 dimethicone; or KF-6016 sold by Shin-Etsu Silicones having the name CTFA PEG-9 methyl ether dimethicone; or KF-6017 sold by Shin-Etsu Silicones having the name CTFA PEG-10 dimethicone; or KF-6038 sold by Shin-Etsu Silicones having the name CTFA lauryl PEG-9 polydimethylsiloxyethyl dimethicone.

Various types of fully or partially crosslinked oxyalkylenated organosiloxane emulsifiers are also suitable. They can be elastomeric or non-elastomeric. They are sometimes called “emulsifying elastomers” because of their elastomeric and emulsifying properties.

Polyoxyalkylenated silicone elastomers that can be used in at least one embodiment include those sold by Shin-Etsu Silicones as KSG-21, KSG-20, KSG-30, KSG-31, KSG-32, KSG-33; KSG-210 which is a dimethicone/PEG-10/15 cross-linked polymer dispersed in dimethicone; KSG-310 which is a PEG-15 lauryl dimethicone cross-linked polymer; KSG-320 which is a PEG-15 lauryl dimethicone cross-linked polymer dispersed in isododecane; KSG-330 (the former dispersed in triethylhexanoin), KSG-340 which is a blend of PEG-10 lauryl dimethicone cross-linked polymer and PEG-15 lauryl dimethicone cross-linked polymer.

Also suitable polyglycerolated silicone elastomers include dimethicone/polyglycerin-3 crosspolymer dispersed in dimethicone; or lauryl dimethicone/polyglycerin-3 crosspolymer dispersed in a variety of solvents such as isododecane, dimethicone, triethylhexanoin, sold under the trade names Shin-Etsu KSG-810, KSG-820, KSG-830 or KSG-840. Also suitable are silicones sold by Dow Corning under the trade names 9010 and DC9011.

Other examples of crosslinked organosiloxane emulsifiers include, but are not limited to, dimethicone/PEG/PPG 15 dimethicone crosslinked polymer; PEG-10 dimethicone crosslinked polymer; PEG-10/15 dimethicone crosslinked polymer; PEG-15 dimethicone crosslinked polymer; dimethicone polyglycerin-3 crosslinked polymer; PPG-20 dimethicone crosslinked polymer; dimethiconol/methylsilanol/silicate crosslinked polymer; dimethiconol/silicate crosslinked polymer; Lauryl Dimethicone PEG-15 crosslinked polymer; Lauryl Dimethicone Polyglycerin-3 crosslinked polymer; PEG-8 Dimethicone Polysorbate-20 crosslinked polymer; PEG-10 Dimethicone/Vinyl Dimethicone Crosspolymer; PEG-10 Lauryl Dimethicone Crosspolymer; PEG-15/Lauryl Dimethicone Crosspolymer; and PEG-15 Laurylpolydimethylsiloxyethyl Crosspolymer.

Thickening agents

Thickening agents that may be mentioned include the following:

a. Carboxylic acid or carboxylate based homopolymer or copolymer, which may be linear or crosslinked: These polymers contain one or more monomers derived from acrylic acid, substituted acrylic acids, and salts and esters of these acrylic acids (acrylates) and substituted acrylic acids. Commercially available polymers include those sold under the trade names Carbopol, Acrysol, Polygel, Sokalan, CarbopolUltrez, and Polygel. Examples of commercially available carboxylic acid polymers include carbomers, which are homopolymers of acrylic acid crosslinked with allyl ethers of sucrose or pentaerythritol. Carbomers are available in BF Goodrich's Carbopol 900 line (e.g., Carbopol 954). Additionally, other suitable carboxylic acid polymeric agents include Ultrez 10 (BF Goodrich) and copolymers of C10-30 alkyl acrylates with one or more monomers of acrylic acid, methacrylic acid or a short chain ester thereof (i.e., a C1-4 alcohol), wherein the crosslinking agent is an allyl ether of sucrose or pentaerythritol. These copolymers are known as acrylate/C10-C30 alkyl acrylate crosslinked polymers and are commercially available as Carbopol 1342, Carbopol 1382, Pemulen TR-1 and Pemulen TR-2, from BF Goodrich.

Other suitable carboxylic acid or carboxylate polymeric agents include copolymers of acrylic acid and C5-C10 alkyl acrylate, copolymers of acrylic acid and maleic anhydride, and polyacrylate crosspolymer-6. Polyacrylate crosspolymer-6 is available in the raw material known as SEPIMAX ZEN from Seppic.

Another suitable carboxylic acid or carboxylate polymeric agent includes acrylamidopropyltrimonium chloride/acrylates copolymer, a cationic copolymer of acrylates (or a quaternary ammonium compound), available as a raw material known as SIMULQUAT HC 305 from Seppic.

In some embodiments, the carboxylic acid or carboxylate polymer thickeners useful herein are those selected from carbomers, C10-C30 alkyl acrylate/acrylate crosslinked polymers, polyacrylate crosslinked polymer-6, acrylamidopropyltrimonium chloride/acrylates copolymer, and mixtures thereof.

b. Celluloses: Non-limiting examples of celluloses include cellulose, carboxymethyl hydroxyethyl cellulose, cellulose acetate propionate carboxylate, hydroxyethyl cellulose, hydroxyethyl ethyl cellulose, hydroxypropyl cellulose, hydroxypropyl methyl cellulose, methyl hydroxyethyl cellulose, microcrystalline cellulose, sodium cellulose sulfate, and mixtures thereof. In some instances, the cellulose is selected from water-soluble cellulose derivatives (e.g., carboxymethyl cellulose, methyl cellulose, methyl hydroxypropyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, sodium salt of cellulose sulfate). Additionally, in some instances, the cellulose is preferably hydroxypropyl cellulose (HPC).

c. Polyvinylpyrrolidone (PVP) and copolymers: Non-limiting examples include polyvinylpyrrolidone (PVP), polyvinylpyrrolidone (PVP)/vinyl acetate copolymer (PVP/VA copolymer), polyvinylpyrrolidone (PVP)/eicosene copolymer, PVP/hexadecene copolymer, etc. Commercially available polyvinylpyrrolidone include Luviskol K30, K85, K90 available from BASF. Commercially available vinylpyrrolidone and vinyl acetate copolymers include Luviskol VA37, VA64 available from BASF; vinylpyrrolidone, methacrylamide and vinylimidazole copolymer (INCI: VP/Methacrylamide/Vinyl Imidazole Copolymer) is commercially available as Luviset from BASF. In some cases, PVP and PVP/VA copolymer are preferred.

d. Sucrose Esters: Non-limiting examples include the following compounds; sucrose palmitate, sucrose cocoate, sucrose monooctanoate, sucrose monodecanoate, sucrose mono- or dilaurate, sucrose monomyristate, sucrose mono- or dipalmitate, sucrose mono- and distearate, sucrose mono-, di- or trioleate, sucrose mono- or dilinoleate, sucrose pentaoleate, sucrose hexaoleate, sucrose heptaoleate or sucrose octooleate, and mixed esters, such as sucrose palmitate/stearate and mixtures thereof.

e. Polyglyceryl Esters: Non-limiting polyglycerol esters (polyglyceryl esters) of fatty acids include those of the following formula:

wherein n is from 2 to 20 or from 2 to 10 or from 2 to 5, or is equal to 2, 3, 4, 5, 6, 7, 8, 9 or 10, and R ¹ , R ² and R ³ may each independently be a fatty acid moiety or hydrogen, provided that at least one of R ¹ , R ² , and R ³ is a fatty acid moiety. For example, R ¹ , R ² and R ³ may be saturated or unsaturated, straight or branched, and have a length of C ₁ -C ₄₀ , C ₁ -C ₃₀ , C ₁ -C ₂₅ , or C ₁ -C ₂₀ , C ₁ -C _{16, or} C ₁ -C ₁₀ . Further, non-limiting examples of nonionic polyglycerol esters of fatty acids include the following: polyglyceryl-4 caprylate/caprate, polyglyceryl-10 caprylate/caprate, polyglyceryl-4 caprate, polyglyceryl-10 caprate, polyglyceryl-4 laurate, polyglyceryl-5 laurate, polyglyceryl-6 laurate, polyglyceryl-10 laurate, polyglyceryl-10 cocoate, polyglyceryl-10 myristate, polyglyceryl-10 oleate, polyglyceryl-10 stearate, and mixtures thereof.

f. C8-24 hydroxyl-substituted aliphatic acid and C8-24 conjugated aliphatic acid: Non-limiting examples include conjugated linoleic acid, cis-parinaric acid, trans-7-octadecenoic acid, cis-5,8,11,14,17-eicosapentaenoic acid, cis-4,7,10,13,16,19-docosahexenoic acid, columbinic acid, linolenelaic acid, ricinolaic acid, stearidonic acid, 2-hydroxystearic acid, alpha-linolenic acid, arachidonic acid, cis-11,14-eicosadienoic acid, linolelaic acid, monopetroselinic acid, petroselinic acid, ricinoleic acid, trans-vaccenic acid, cis-11,14,17-eicosatrienoic acid, cis-5-eicosenoic acid, cis-8,11,14-eicosatrienoic acid, hexadecatrienoic acid, palmitoleic acid, petroselaidic acid, trans trans farnesol, cis-13,16-docosadienoic acid, cis-vaccenic acid, cis-11-eicosenoic acid, cis-13,16,19-docosatrienoic acid, cis-13-octadecenoic acid, cis-15-octadecanoic acid, cis-7,10,13,16 docosatetraenoic acid, elaidic acid, gamma-linolenic acid, geranoic acid, geranylgeranoic acid, linoleic acid, oleic acid, pinolenic acid, trans-13-octadecenoic acid. More preferably, the aliphatic acid includes 12-hydroxystearic acid, conjugated linoleic acid or a mixture thereof.

g. Gums: Non-limiting examples of gums include gum arabic, gum tragacanth, gum karaya, guar gum, gellan gum, tara gum, locust bean gum, tamarind gum, xanthan gum, carob gum, Seneca gum, sclerotium gum, gellan gum, etc.

The leave-in hair treatment compositions of the present disclosure optionally include or exclude cationic surfactants, anionic surfactants, and/or amphoteric surfactants. In various embodiments, the leave-in hair treatment composition is free or substantially free of cationic surfactants. In various embodiments, the leave-in hair treatment composition is free or substantially free of anionic surfactants. In various embodiments, the leave-in hair treatment composition is free or substantially free of amphoteric surfactants.

In various embodiments, the leave-in hair treatment composition is free or substantially free of reducing agents, oxidizing agents, oxidative dye precursors, direct dyes, or a combination thereof. In various embodiments, the leave-in hair treatment composition is free or substantially free of reducing agents. In various embodiments, the leave-in hair treatment composition is free or substantially free of oxidizing agents (such as hydrogen peroxide), in various embodiments, the leave-in hair treatment composition is free or substantially free of direct dyes.

Various modifications may be made to the compositions and methods described above without departing from the scope of the invention. Accordingly, it is intended that any disclosure contained in the above description and in the examples given below be construed in an illustrative and not limiting sense.

Example 1

( Inventive Compositions)

HAS B % by weight
1239858 I % by weight 1045612 D2 (has) Water WATER 12.7 12.4 (b) Polyol PROPYLENE GLYCOL 0.1 0.1 GLYCERIN 5 5 DIPROPYLENE GLYCOL 14 14 (a) + (b) 31.8 31.5 (c)(i) Hydrocarbon oil ISODODECANE 42.9 45.2 ISOALKANE C13-14 0.3 0.1 (c)(ii) Silicone oil DIMETHICONOL 4.2 4.2 DIMETHICONE 8 8 Total (c) 51.4 57.5 Ratio ((a) + (b)) : (c) 1:1.6 1:1.8 (d) Carboxylic acid CITRIC ACID 1 1 (e)(i) Silicone emulsifier PEG-14 DIMETHICONE 1.9 1.9 (e)(ii) Non-silicone emulsifier LAURETH-7 0.1 0.1 PEG-60 HYDROGENATED CASTOR OIL 0.5 0.5 (f) Monoalcohol ETHANOL 5.5 5.5 (g) Thickening agent POLYACRYLAMIDE 0.6 0.2 (h) Humectant HYDROXYETHYL UREA 1.4 1.4 (i) Various ingredients Antioxidants, Buffers, Fragrances, Preservatives, etc.* ≤ 5 ≤ 5 pH 5 3 Viscosity ~2620** ~2080**

* pentaerythrityl tetra-di-T-butyl hydroxyhydrocinnamate, sodium citrate, phenoxyethanol and fragrance.

**Viscosity was measured using a Brookfield DV-LL+ Pro Viscometer using the Helipath T-bar C-spindle and a rotation speed of 50 rpm.

Example 2 (Performance)

Tests were conducted to determine how treatment with Composition A affects the hair fiber. Tests were conducted on strands of Caucasian hair, treated according to one of three different treatment protocols, described below.

1. CONTROL: Hair strands were first cleansed with a standard shampoo (0.4 ml/g of hair, 30 seconds of massage and 1 min. leave on, rinse and remove excess water from the hair). After cleansing, the hair strands were subjected to six treatments with deionized water. Deionized water was applied to the hair strands six times in a row. The hair strands were allowed to dry after each application of deionized water.

2. INVENTION: The hair strands were first cleansed with a standard shampoo (0.4 ml/g hair, 30 seconds massage and 1 min. leave on, rinse and remove excess water from the hair). After cleansing, the hair strands were subjected to six treatments with composition A. For each treatment, composition A was applied to the hair strands (0.15 g/g hair) massaged into the hair for 1 minute, combed through the hair 5 times, and the hair was blow-dried using a high/hot setting for approximately 3 minutes. The treatment process was performed six times in succession.

3. INVENTION: One week after treatment of the hair strands according to (2) above, the hair strands were cleansed with a standard shampoo (0.4 ml/g of hair, 30 seconds massage and 1 min. leave on, rinse and remove excess water from the hair). After cleansing the hair, the hair was blow-dried using a high/hot setting for approximately 3 minutes.

Tests were conducted to determine how the three treatment protocols described above impact hair. Hair was analyzed by Differential Scanning Calorimetry (DSC, DSC-2500, TA Instruments), Miniature Tensile Testing (MTT, MTT-686, Dia-Stron Ltd) and Cyclic Fatigue Tensile Testing (CFTT, CYC802, Dia-Stron Ltd). Each individual test was conducted with fifty (50) hair fibers per treatment.

DSC was used to measure the denaturation temperature, which is a measure of the thermal stability of proteins in hair.

CFTT was used to measure cycles to breakage (CTB), which assesses the number of repeated elongations and relaxations of the hair until breakage; each elongation causes a pre-specified stress that keeps the fibers deformed in the elastic region of the hair type, simulating daily hair care. Improvements in this metric indicate a greater ability of the hair to resist fatigue.

The MTT was used to measure Young's modulus, which is the slope of the initial portion of the stress-strain curve, which is adjusted for cross-sectional area, representing a measure of the spring-like structure of the hair. It also measures plateau stress, which is the average stress during the plateau region of the stress-strain curve of the fiber (~15% strain); breaking stress, which is the total force required to break the hair fiber; elongation at break, which represents the total deformation of the hair at the point of failure; and toughness, which is the extent to which the hair can absorb energy before fracture.

The test results were subjected to statistical analysis using Tukey boxes with k=3, to identify and exclude significant outliers. Student’s t-test at 95% confidence interval was used to analyze significant differences in DSC and MTT results. Log-Rank test at 95% confidence interval was used to analyze significant differences in cycles to failure. The results are presented in the tables below and the corresponding figures. Levels not related by the same number are statistically significant.

DSC
Denaturation temperature ( ^o C), 95% CI
Shown in Figure 1 Treatment N Average Type error Statistical differences Witness 4 149.1 0.34 3 6 Treatments 4 151.5 0.12 2 6 Treatments + cleaning 4 154.1 0.16 1

CFTT
Cycles to Failure (CJR)
Shown in Figure 2 Treatment N Median Average Type error Statistical differences Witness 50 4160 6681 966 2 6 Treatments 48 8604 13490 2124 1 6 Treatments + cleaning 49 8762 13378 2149 1

MTT
Young's modulus (MPa), 95% CI
Shown in Figure 3 Treatment N Average Type error Statistical differences Witness 47 4240.4 46.1 1 6 Treatments 48 4143.3 59.8 1, 2 6 Treatments + cleaning 48 4037.9 50.2 2

MTT
Plateau stress (Mpa), 95% CI
Shown in Figure 4 Treatment N Average Type error Statistical differences Witness 47 147.7 0.74 1 6 Treatments 48 146.6 1.04 1 6 Treatments + cleaning 48 133.9 1.16 2

MTT
Stress at break (MPa), 95% CI
Shown in Figure 5 Treatment N Average Type error Statistical differences Witness 47 228.1 1.84 1 6 Treatments 48 217.8 2.57 2 6 Treatments + cleaning 48 212.6 2.88 2

MTT
Elongation at break (%), 95% CI
Shown in Figure 6 Treatment N Average Type error Statistical differences Witness 48 53.3 1.07 2 6 Treatments 48 53.5 1.16 2 6 Treatments + cleaning 47 57.4 0.75 1

MTT
Toughness (MJ/m3), 95% CI
Shown in Figure 7 Treatment N Average Type error Statistical differences Witness 47 89.5 1.55 1 6 Treatments 48 88.8 2.25 1 6 Treatments + cleaning 48 88.1 2.35 1

The data show that hair treated according to protocol (2) (6 treatments) modified the hair fiber and improved its durability compared to hair treated according to protocol (1) (control). Hair treated according to protocol (2) (6 treatments) also appeared to improve hair hydration and moisturization, leading to lower breaking stress compared to protocol (1) (control), due to solvation of weak bonds. Hair treated according to protocol (3) (6 treatments and cleansing) supported the benefits conferred by protocol (2) (6 treatments). This indicates that composition A penetrates deep into the hair fiber with improved retention. Hair treated with protocol (3) (6 treatments and cleansing) had lower plateau stress and higher elongation at break than hair treated with protocol (1) (control) and hair treated with protocol (2) (6 treatments), and lower Young's modulus than hair treated with protocol (1) (control), which was particularly surprising. This suggests further hydration of the fiber leading to plasticization. The improved durability, hydration and moisturization evidenced by hair treated according to Protocol (2) (6 treatments) and Protocol (3) (6 treatments and cleansing) are significant and surprising.

Definitions

The term “hair and/or body hair” as used herein includes head hair, beard hair, mustache hair, eyebrows, eyelashes, and body hair, unless otherwise specified.

As used herein, the terms “comprising,” “having,” and “including” are used in their broad and non-limiting sense.

The term "oil" refers to any fatty substance that is in liquid form at room temperature (25°C) and atmospheric pressure.

The term "solid fatty compound" is a fatty compound that is not an oil, that is, any fatty substance that is a solid at room temperature (25°C) and atmospheric pressure.

The term "hydrocarbon oil" is interchangeable with the term "hydrocarbon oil" and means an oil containing primarily hydrogen and carbon atoms.

The term “silicone-based oil” is interchangeable with the term “silicone oil” and the term “organosiloxane oil” and is an oil containing silicone atoms, particularly oils having Si-O groups.

The term "fluorinated oil" means an oil containing at least one fluorine atom.

The oils may optionally comprise oxygen, nitrogen, sulfur and/or phosphorus atoms, for example in the form of hydroxyl or acid radicals.

For the purposes of the present invention, the expression "volatile oil" designates an oil (or a non-aqueous medium) capable of evaporating on contact with the skin in less than one hour, at room temperature and atmospheric pressure. The volatile oil is a volatile cosmetic oil, which is liquid at room temperature, having in particular a non-zero vapor pressure, at room temperature and atmospheric pressure, having in particular a vapor pressure ranging from 0.13 Pa to 40,000 Pa (10-3 to 300 mmHg), preferably ranging from 1.3 Pa to 13,000 Pa (0.01 to 100 mmHg) and preferentially ranging from 1.3 Pa to 1300 Pa (0.01 to 10 mmHg).

For the purposes of this disclosure, the term “non-volatile oil” means an oil whose vapor pressure is less than 0.13 Pa.

The term “silicone emulsifier” is interchangeable with the term “silicone-based emulsifier” and the term “organosiloxane emulsifier” and refers to an emulsifier containing one or more silicon atoms.

The term “non-silicone emulsifier” is interchangeable with the term “non-silicone emulsifier” and refers to an emulsifier that does not contain silicon atoms.

The term “rinse-off” as used herein indicates that the composition is used in a context where the composition is ultimately rinsed or washed from a treated surface (e.g., skin, hair, or hard surfaces) after or during application of the product. Such rinse-off compositions are to be distinguished from “leave-on” compositions. For example, a rinse-off composition is applied to the hair, allowed to remain on the hair for a short period of time (e.g., a few seconds to about 5, 10, or 15 minutes), and is then rinsed from the hair prior to styling the hair.

A "leave-in" composition (also called leave-in) means a composition that is applied to the hair and is not subject to immediate rinsing and/or washing, for example for at least 4 hours or for a period of 4 hours to 72 hours, 4 hours to 48 hours, or 8 hours to 36 hours, or 8 hours to 24 hours. In other words, the product is applied to the hair and remains on the hair, as it was styled, i.e. it is not removed from the hair before styling the hair.

For the purposes of this disclosure, the term “nonionic emulsifier” is interchangeable with the term “nonionic surfactant.” A reference to a nonionic emulsifier (or nonionic surfactant) in the leave-in hair treatment compositions of the present disclosure does not indicate that the composition is an emulsion. In various embodiments, the leave-in hair treatment composition is an emulsion, but in various embodiments, the leave-in hair treatment composition is not an emulsion.

The leave-in hair treatment composition of the present disclosure may be in the form of an emulsion, for example, a microemulsion, a water-in-oil emulsion, an oil-in-water emulsion, a micellar emulsion or a bicontinuous emulsion, but is not necessarily in the form of an emulsion. In a preferred embodiment, the leave-in hair treatment composition is a microemulsion. In a preferred embodiment, the leave-in hair treatment composition is a bicontinuous emulsion, preferably a bicontinuous microemulsion.

The term “transparent” with respect to a transparent composition indicates that the composition has a transmittance of at least 80% at a wavelength of 600 nm, as measured, for example, using a Lambda 40 UV-visible spectrometer. The compositions may have, for example, a transmittance of at least 80%, at least 90%, or at least 95% at a wavelength of 600 nm, as measured, for example, using a Lambda 40 UV-visible spectrometer. The term “clear” is interchangeable with the term “transparent” for purposes of this disclosure. A person can typically see through a transparent composition, for example, and read the text on the other side of a clear glass or clear plastic bottle containing the composition.

The term “translucent” in relation to a translucent composition indicates that the composition has a transmittance of at least 50% at a wavelength of 600 nm, as measured, for example, using a Lambda 40 UV-visible spectrometer. A person is unlikely to be able to see through a translucent composition, for example, and read the text on the other side of a clear glass or clear plastic bottle containing the composition. Instead, the text is usually blurred and difficult if not impossible to read, although movement and structure can usually be identified.

An “opaque” composition is one that is not transparent or translucent.

In the context of the present disclosure, a "composition colorant" is a compound that colors the composition but does not have an appreciable coloring effect on the hair. That is, the composition colorant is included to provide coloring to the composition for aesthetic appeal, not intended to impart coloring properties to the hair. Hair styling gels, for example, can come in a variety of different colors (e.g., light blue, light pink, etc.), but application of the styling gel to the hair does not change the color of the hair.

The terms "a," "an," "the," and "the" are understood to include both the plural and the singular. Thus, the term "a mixture of" also includes "mixtures of." Throughout the disclosure, the term "a mixture thereof" is used, following a list of elements as shown in the following example where the letters A through F represent the elements: "one or more elements selected from the group consisting of A, B, C, D, E, F, and a mixture thereof." The term "a mixture thereof" does not require that the mixture include all of the elements A, B, C, D, E, and F (although all of the elements A, B, C, D, E, and F may be included). Rather, it indicates that a mixture of two or more of the elements A, B, C, D, E, and F may be included. In other words, it is equivalent to the formulation "one or more elements selected from the group consisting of A, B, C, D, E, F, and a mixture of two or more of A, B, C, D, E and F".

Similarly, the term “a salt thereof” also refers to “salts thereof.” Thus, when the disclosure refers to “an element selected from the group consisting of A, B, C, D, E, F, a salt thereof, or a mixture thereof,” it indicates that one or more of A, B, C, D, and F may be included, one or more of a salt of A, a salt of B, a salt of C, a salt of D, a salt of E, and a salt of F may be included, or a mixture of any two of A, B, C, D, E, F, a salt of A, a salt of B, a salt of C, a salt of D, a salt of E, and a salt of F may be included.

The term “one or more” means “at least one” and therefore includes individual components as well as mixtures/combinations.

Except in working examples, or where otherwise indicated, all numbers expressing quantities of ingredients and/or reaction conditions may be modified in all cases by the term “approximately”, meaning to within +/- 5% of the number indicated.

Some of the various component categories identified may overlap. In cases where an overlap may exist and the composition includes both components (or the composition includes more than two overlapping components), an overlapping component does not represent more than one component. For example, a fatty acid may be considered both an emulsifier and a fat compound. If a particular composition includes both an emulsifier and a fat compound, a single fatty acid will serve solely as an emulsifier or solely as a fat compound (the single fatty acid does not serve as both an emulsifier and a fat compound).

Salts referred to throughout the disclosure may include salts having a counterion such as an alkali metal, an alkaline earth metal or an ammonium counterion. This list of counterions is not, however, limiting.

The term "treat" (and its grammatical variations) are used herein to refer to the application of the compositions of the present disclosure to the surface of keratinous substrates such as hair.

In this document, all ranges provided are intended to include each specific range within the given ranges, as well as a combination of intermediate subranges. Thus, a range of 1 to 5 specifically includes 1, 2, 3, 4, and 5, as well as subranges such as 2-5, 3-5, 2-3, 2-4, 1-4, etc. All ranges and values disclosed herein are inclusive and combinable. For example, any value or point described herein that falls within a range described herein may serve as a minimum or maximum value to derive a subrange, etc.

Any components positively presented in the present disclosure may be negatively excluded from the claims, for example, a claimed composition may be "free", "substantially free" (or "substantially free") of one or more components that are positively presented in the present disclosure. For example, silicones may optionally be included in the compositions but preferably the compositions are free or substantially free of silicones. Silicones are synthetic polymers consisting of repeating units of the elemental siloxane, silicon and oxygen, combined with other elements, most commonly carbon and hydrogen. Silicones are therefore also referred to as polysiloxanes.

The term "substantially free" or "essentially free" as used herein means that less than about 2% by weight of a specific material is added to a composition, based on the total weight of the compositions. However, the compositions may include less than about 1% by weight, less than about 0.5% by weight, less than about 0.1% by weight, or none of the specified material. Any components set forth herein may be optionally included or excluded from the compositions/processes/kits. When excluded, the compositions/processes/kits may be free or essentially free of the component. For example, a particular composition may be free or essentially free of alkoxylated compounds, e.g., ethoxylated thickeners and/or ethoxylated surfactants. Similarly, a particular composition may be free or essentially free of sulfates, such as sulfate surfactants.

All publications and patent applications cited herein are incorporated by reference, and for all purposes, as if each individual publication or patent application were specifically and individually indicated as being incorporated by reference. In the event of any inconsistency between this disclosure and any publication or patent application incorporated herein by reference, this disclosure shall prevail.

The compositions described throughout this disclosure may be "leave-on" compositions. A "leave-on" (also referred to as a leave-on) composition refers to a composition that is applied to the skin or hair and is not subject to immediate rinsing and/or washing, for example for at least 4 hours or for a period of time in the range of 4 hours to 72 hours, 4 hours to 48 hours, or 8 hours to 36 hours, or 8 hours to 24 hours. In other words, the product is applied to the hair and remains on the hair, as styled, i.e., it is not removed from the hair prior to styling the hair.

Claims (10)

Leave-in hair treatment composition comprising:
(a) water;
(b) about 5 to about 40% by weight of one or more polyols selected from glycerin, ethylene glycol, propylene glycol, butylene glycol, hexylene glycol, pentylene glycol, diethylene glycol, dipropylene glycol, 1,3 propanediol, and a mixture thereof;
(c) at least 20% by weight of one or more oils; and
(d) at least 0.5% of one or more non-polymeric, non-thiol C1-C9 mono-, di- and/or tricarboxylic acids, their salts, or a combination thereof;
in which the ratio ((a)+(b)) to (c) is 1:1 to 1:5; and
all weight percentages are relative to a total weight of the composition. The composition of claim 1, comprising about 30 to about 70% by weight of the one or more oils. A composition according to claim 1, wherein the one or more non-polymeric, non-thiol C1-C9 mono-, di- and/or tricarboxylic acids are selected from formic acid, acetic acid, lactic acid, propionic acid, butyric acid, gluconic acid, valeric acid, caproic acid, entanthic acid, caprylic acid, pelargonic acid, capric acid, undecylic acid, lauric acid, tridecylic acid, lauric acid, tridecylic acid, myristic acid, pentadecylic acid, margaric acid, stearic acid, nonaric acid, arachidic acid, oxalic acid, malonic acid, malic acid, glutaric acid, citraconic acid, succinic acid, adipic acid, tartaric acid, fumaric acid, maleic acid, sebacic acid, azelaic acid, dodecanedioic acid, phthalic acid, isophthalic acid, terephthalic acid, and 2,6-naphthalene dicarboxylic acid, citric acid, isocitric acid, aconitric acid, propane-1,2,3-tricarboxylic acid and benzene-1,3,5-tricarboxylic acid, a salt thereof and a combination thereof. A composition according to claim 1, which is translucent or transparent. The composition of claim 1, having a pH of about 3 to about 6. The composition of claim 1, wherein at least one of the one or more oils is a hydrocarbon oil and at least one of the one or more oils is a silicone-based oil. The composition of claim 1, further comprising:
(e) one or more emulsifiers; and/or
(f) one or more C1-C6 monoalcohols. The composition of claim 1, further comprising:
(g) one or more thickening agents, preferably selected from crosslinked polyacrylate polymers, cationic acrylate copolymers, anionic acrylic or carboxylic acid polymers, polyacrylamide polymers, polysaccharides, gums, polyquaterniums, vinylpyrrolidone homopolymers/copolymers, C8-24 hydroxyl-substituted aliphatic acids, C8-24 conjugated aliphatic acids, sugar fatty esters, polyglyceryl esters and a combination thereof. The composition of claim 1, further comprising:
(h) one or more humectants selected from hydroxyalkylureas, preferably selected from N-(2-hydroxyethyl)urea, N-(2-hydroxypropyl)urea, N-(3-hydroxypropyl)urea, N-(2,3-dihydroxypropyl)urea, N-(2,3,4,5,6-pentahydroxyhexyl)urea, N-methyl-N-(1,3,4,5,6-pentahydroxy-2-hexyl)urea, N-methyl-N'-(1-hydroxy-2-methyl-2-propyl)urea, N-(1-hydroxy-2-methyl-2-propyl)urea, N-(1,3-dihydroxy-2-propyl)urea; N-(trishydroxymethyl) urea, N-ethyl-N'-(2-hydroxyethyl) urea, N,N-bis-(2-hydroxyethyl) urea, N,N'-bis-(2-hydroxyethyl) urea, N,N-bis-(2-hydroxypropyl) urea, N,N'-bis-(2-hydroxypropyl) urea, N,N-bis-(2-hydroxyethyl)-N'-propyl urea, N,N-bis-(2-hydroxypropyl)-N'-(2-hydroxyethyl) urea, N-tert-butyl-N'-(2-hydroxyethyl)-N'-(2-hydroxypropyl) urea, N-(1,3-dihydroxy-2-propyl)-N'-(2-hydroxyethyl) urea, N,N-bis-(2-hydroxyethyl)-N', N'-dimethyl urea, N,N,N',N'-tetrakis-(2-hydroxyethyl) urea, N',N'-bis-(2-hydroxyethyl)-N',N'-bis-(2-hydroxypropyl) urea. A method of treating hair comprising applying the leave-in hair treatment composition of claim 1 to the hair and styling the hair without first rinsing the composition from the hair.