CN110934763A

CN110934763A - Skin care composition for moisturizing

Info

Publication number: CN110934763A
Application number: CN202010000291.XA
Authority: CN
Inventors: 朱爱娣; 姜春鹏
Original assignee: Shanghai Lurui Biotechnology Co Ltd
Current assignee: Shanghai Lurui Biotechnology Co Ltd
Priority date: 2020-01-02
Filing date: 2020-01-02
Publication date: 2020-03-31

Abstract

The invention belongs to the technical field of cosmetics, and particularly discloses a skin care composition for moisturizing. The paint at least comprises the following components in parts by weight: 20-65 parts of water, 0.15-0.3 part of neutralizer and 0.1-1 part of co-emulsifier; and B component: 6-14 parts of a softening agent, 1-3 parts of a film forming agent and 0.5-1.5 parts of an antioxidant; and C, component C: 12-24 parts of a humectant and 1-3 parts of an emulsifier; and (D) component: 0.2 to 0.3 portion of thickening agent and 0.1 to 1 portion of preservative. The cream prepared by the invention has good moisturizing and moistening effects, strong skin softening feeling, strong skin moistening feeling, wide practicability and wide applicability, is clear and moist, does not stick greasy, and has good market prospect.

Description

Skin care composition for moisturizing

Technical Field

The invention relates to the technical field of cosmetics, in particular to a skin care composition for moisturizing.

Background

The skin cream is a cosmetic which is frequently used by people in daily life, and has the effects of nourishing skin, supplementing moisture required by the skin and making the skin tender and smooth. The common skin cream has the same and different formula, and is basically an oil-in-water or water-in-oil emulsified paste formed by a water-soluble component and an oil-soluble component through the action of an emulsifier, wherein the content of the oil-soluble component is generally 10-70%, and the product is between weak oiliness and oiliness.

In autumn and winter, consumers prefer to select certain moisturizing face creams for moisturizing and caring dry skin, and hope that the moisturizing face creams do not have sticky feeling in use on the premise of moisturizing. Common moisturizing compositions in the market are thick and heavy generally, and good moisturizing feeling and durable moisturizing property are achieved by adding grease and wax with high proportion and even adding grease with strong sealing property, so that the skin of a product feels sticky and is difficult to spread, the absorption speed is slow, the use feeling is not good, and a large amount of grease needs emulsifiers with strong emulsifying capacity, the emulsifiers are mostly synthesized artificially and are not attached to the skin, so that the skin becomes oily and shiny after use, even has the situation of stuffiness and acne and the like, and the skin burden is caused.

Disclosure of Invention

In order to solve the technical problems, the first aspect of the invention provides a skin care composition for moisturizing, which at least comprises a component A: 20-65 parts of water, 0.15-0.3 part of neutralizer and 0.1-1 part of co-emulsifier; and B component: 8-19 parts of a softening agent, 1-3 parts of a film forming agent and 0.5-1.5 parts of an antioxidant; and C, component C: 12-24 parts of a humectant and 1-3 parts of an emulsifier; and (D) component: 0.2 to 0.3 portion of thickening agent and 0.1 to 1 portion of preservative.

As a preferred embodiment of the present invention, the emollient is one or more selected from cetostearyl alcohol, squalane, cetyl alcohol, jojoba oil, caprylic/capric triglyceride, stearic acid, lanolin, meadowfoam seed oil, and hydrogenated coconut oil.

As a preferable technical scheme, the softening agent is cetearyl alcohol, squalane, meadowfoam seed oil and hydrogenated coconut oil, wherein the mass ratio of the cetearyl alcohol, the squalane, the meadowfoam seed oil and the hydrogenated coconut oil is (1-3): (5-11): (1-3): (1-2).

As a preferable technical scheme, the film forming agent is selected from one or more of polydimethylsiloxane, phenyl trimethyl polysiloxane and cyclopentasiloxane.

In a preferred embodiment of the present invention, the humectant is one or more selected from glycerin, propylene glycol, sodium hyaluronate, collagen, sodium lactate, 1, 3-butylene glycol, ethylhexyl glycerin, hyaluronic acid, trehalose, a purslane extract, cholesterol, sodium polyglutamate, and sucrose.

According to a preferable technical scheme of the invention, the humectant is glycerol and 1, 3-butanediol, and the mass ratio of the glycerol to the 1, 3-butanediol is 1: (0.5-2.5).

As a preferable technical scheme, the emulsifier is selected from one or more of glyceryl monostearate, cetearyl alcohol, Tween 80, span 80 and hydrogenated lecithin.

As a preferable technical scheme, the thickening agent is selected from one or more of xanthan gum, carbomer and hydroxyethyl acrylate/sodium acryloyldimethyl taurate copolymer.

According to a second aspect of the invention, a skin care cream for moisturizing is provided, and the skin care cream is prepared from the skin care composition for moisturizing.

In a third aspect of the present invention, there is provided a method for preparing a skin care cream for moisturizing, the method comprising at least the steps of:

(1) mixing the components in the component A according to the weight part, heating to 80-85 ℃, uniformly stirring, and putting into a reaction kettle;

(2) mixing the components in the component B according to the weight part, heating to 80-85 ℃, uniformly stirring, and then putting into a reaction kettle for emulsification at the homogenizing speed of 5000-6000rpm for 5-10 min;

(3) mixing the components in the component C according to the weight parts, heating at 55-60 ℃, stirring, dispersing uniformly, and putting into a reaction kettle before emulsification;

(4) when the temperature of the system is reduced to 30-50 ℃, the components in the component D are put into a reaction kettle, and the mixture is homogenized and dispersed uniformly at the homogenizing speed of 2500-.

Has the advantages that: the invention provides a moisturizing and nourishing skin care composition, which is prepared by using a natural emulsifier-hydrogenated lecithin as a main emulsifier, inulin lauryl carbamate as an auxiliary emulsifier and grease with good moisturizing effect, mildness, safety, easiness in emulsification and the like in combination, so as to solve the defects of stickiness, poor use feeling, mildness, easiness in acne and the like caused by a conventional composition in the market. In addition, the moisturizing and nourishing cream prepared by the invention can also adjust the oil-fat balance, can deeply moisturize the skin, can preserve water for a long time, effectively moisturizes the skin, and increases the elasticity and tension of the skin; when the skin-care product is applied, the skin-care product is easy to spread, clear, moist, not sticky, soft and strong in skin-moistening feeling; in conclusion, the product has wide practicability and wide applicability and has good market prospect.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a graph showing the effect of moisture content, roughness, smoothness tests on skin using the skin cream prepared in example 1 and without the skin cream.

Fig. 2 is a graph showing the effect of the skin cream prepared in example 1 on the skin at the first web position.

Fig. 3 is a graph showing the instant effect of the skin care cream prepared in the embodiment 1 after being applied to the skin at the position of the tiger's mouth.

Detailed Description

The disclosure may be understood more readily by reference to the following detailed description of preferred embodiments of the invention and the examples included therein. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. In case of conflict, the present specification, including definitions, will control.

The term "prepared from …" as used herein is synonymous with "comprising". The terms "comprises," "comprising," "includes," "including," "has," "having," "contains," "containing," or any other variation thereof, as used herein, are intended to cover a non-exclusive inclusion. For example, a composition, process, method, article, or apparatus that comprises a list of elements is not necessarily limited to only those elements but may include other elements not expressly listed or inherent to such composition, process, method, article, or apparatus.

The conjunction "consisting of …" excludes any unspecified elements, steps or components. If used in a claim, the phrase is intended to claim as closed, meaning that it does not contain materials other than those described, except for the conventional impurities associated with its components. When the phrase "consisting of …" appears in a clause of the subject matter of the claims rather than immediately after the subject matter, it defines only the elements described in the clause; other elements are not excluded from the claims as a whole.

When an amount, concentration, or other value or parameter is expressed as a range, preferred range, or as a range of upper preferable values and lower preferable values, this is to be understood as specifically disclosing all ranges formed from any pair of any upper range limit or preferred value and any lower range limit or preferred value, regardless of whether ranges are separately disclosed. For example, when a range of "1 to 5" is disclosed, the described range should be interpreted to include the ranges "1 to 4", "1 to 3", "1 to 2 and 4 to 5", "1 to 3 and 5", and the like. When a range of values is described herein, unless otherwise stated, the range is intended to include the endpoints thereof and all integers and fractions within the range.

The singular forms "a", "an" and "the" include plural referents unless the context clearly dictates otherwise. "optional" or "any" means that the subsequently described event or events may or may not occur, and that the description includes instances where the event occurs and instances where it does not.

Approximating language, as used herein in the specification and claims, is intended to modify a quantity, such that the invention is not limited to the specific quantity, but includes equivalent parts to those quantities, which are acceptable for use in the practice of the invention without resulting in a change in the basic function of the component. Component(s) should be modified by the use of "about", "about" and the like to modify a numerical value, meaning that the invention is not limited to the precise numerical value. In some instances, the approximating language may correspond to the precision of an instrument for measuring the value. In the present description and claims, range limitations may be combined and/or interchanged, including all sub-ranges contained therein if not otherwise stated.

In addition, the indefinite articles "a" and "an" preceding an element or component of the invention are not intended to limit the number requirement (i.e., the number of occurrences) of the element or component. Thus, "a" or "an" should be read to include one or at least one, and elements or components in the singular also include the plural unless the number is explicitly intended to mean the singular.

In order to solve the technical problems, the first aspect of the invention provides a skin care composition for moisturizing, which at least comprises the following components in parts by weight: 20-65 parts of water, 0.15-0.3 part of neutralizer and 0.1-1 part of co-emulsifier; and B component: 8-19 parts of a softening agent, 1-3 parts of a film forming agent and 0.5-1.5 parts of an antioxidant; and C, component C: 12-24 parts of a humectant and 1-3 parts of an emulsifier; and (D) component: 0.2 to 0.3 portion of thickening agent and 0.1 to 1 portion of preservative.

In a preferred embodiment, the skin care composition for moisturizing and moisturizing provided by the invention at least comprises the following components in parts by weight: 30-60 parts of water, 0.17-0.25 part of neutralizing agent and 0.4-0.8 part of co-emulsifier; and B component: 10-15 parts of a softening agent, 1.5-2.5 parts of a film forming agent and 0.7-1.3 parts of an antioxidant; and C, component C: 15-19 parts of humectant and 1.2-1.87 parts of emulsifier; and (D) component: 0.23 to 0.28 portion of thickening agent and 0.4 to 0.8 portion of preservative.

In a most preferred embodiment, the skin care composition for moisturizing and moisturizing of the invention at least comprises the following components in parts by weight: 45 parts of water, 0.2 part of neutralizer and 0.5 part of auxiliary emulsifier; and B component: 12 parts of a softening agent, 2 parts of a film forming agent and 1 part of an antioxidant; and C, component C: 15 parts of a humectant and 1.5 parts of an emulsifier; and (D) component: 0.25 part of thickening agent and 0.5 part of preservative.

Neutralizing agent

The neutralizing agent of the invention is a substance which adjusts the pH value of the medium by the interaction of acid (acid salt) and alkali (basic salt) components. It has a great influence on emulsion polymerization, acetalization, curing of resin, storage of latex, etc. Organic or inorganic basic/acidic substances which form salts with-COOH or-OH groups can be used as neutralizing agents, but the neutralization action of different basic/acidic substances differs greatly.

In a preferred embodiment, the neutralizing agent according to the invention is selected from one or more of 2-amino-2-methyl-1-propanol, 2-amino-2-methyl-1, 3-propanediol, triethanolamine, diethanolamine, monoethanolamine, triisopropanolamine, 2-amino-2-hydroxymethyl-1, 3-propanediol, L-arginine, L-lysine, N-alkyltaurates.

In a most preferred embodiment, the neutralizing agent of the present invention is triethanolamine.

Auxiliary emulsifier

The co-emulsifier of the present invention is an additive that plays a positive role in stabilizing an emulsion in an emulsion system.

In a preferred embodiment, the coemulsifier of the present invention is selected from one or more of fatty alcohol polyoxyethylene ether, methyl glucoside sesquistearate, polyoxyethylene stearate, polysorbate, and inulin lauryl carbamate.

In a most preferred embodiment, the co-emulsifier of the present invention is inulin lauryl carbamate.

Softening and moistening agent

Emollients, also known as emollients, are generally "oily" substances that fill the interstices of the stratum corneum fragments, smoothing and softening the skin texture. The skin softening agent and its product have the functions of preventing dry skin or relieving dry skin symptom, and keeping skin smooth, soft and elastic as normal healthy skin.

In a preferred embodiment, the emollient of the present invention is selected from one or more of cetostearyl alcohol, squalane, cetyl alcohol, jojoba oil, caprylic/capric triglyceride, stearic acid, lanolin, meadowfoam seed oil, hydrogenated coconut oil.

In a more preferred embodiment, the emollient of the present invention is cetearyl alcohol, squalane, meadowfoam seed oil, hydrogenated coconut oil, wherein the mass ratio of cetearyl alcohol, squalane, meadowfoam seed oil, hydrogenated coconut oil is (1-3): (5-11): (1-3): (1-2).

In a most preferred embodiment, the emollients of the present invention are cetearyl alcohol, squalane, meadowfoam seed oil and hydrogenated coconut oil, wherein the mass ratio of cetearyl alcohol, squalane, meadowfoam seed oil and hydrogenated coconut oil is 2: 10: 2: 1.5.

film forming agent

The film forming agent is coated on the skin and dried to form a layer of ultrathin micropore film which is tightly stuck on the skin, is breathable and moisture permeable, does not influence the skin to play the original function, and has micropores with the size which can just prevent germs and harmful substances from being corroded. The functional material contained in the film forming agent can play a component response role in internal or external.

In a preferred embodiment, the film forming agent of the present invention is selected from one or more of polydimethylsiloxane, phenyl trimethicone, and cyclopentasiloxane.

In a preferred embodiment, the film forming agent of the present invention is polydimethylsiloxane.

Antioxidant agent

The antioxidant of the present invention is a substance that prevents adverse effects of oxygen. It is a class of substances that helps to trap and neutralize free radicals, thereby removing the damage that free radicals cause to the human body.

In a preferred embodiment, the antioxidant according to the present invention is selected from one or more of tocopherol, butylated hydroxytoluene, tocopherol acetate, pentaerythritol tetrakis (bis-tert-butylhydroxyhydrocinnamate) ester.

In a most preferred embodiment, the antioxidant of the present invention is a tocopherol.

Moisture-retaining agent

The moisturizer is a cosmetic raw material with the functions of moisturizing and repairing sebum membranes, and the raw material has a special molecular structure, can adsorb and retain moisture, and maintains the skin barrier function while maintaining the skin hydration.

In a preferred embodiment, the moisturizer of the present invention is selected from one or more of glycerin, propylene glycol, sodium hyaluronate, collagen, sodium lactate, 1, 3-butylene glycol, ethylhexyl glycerin, hyaluronic acid, trehalose, purslane extract, cholesterol, sodium polyglutamate, and sucrose.

In a more preferred embodiment, the humectant of the present invention is glycerin and 1, 3-butylene glycol, wherein the mass ratio of glycerin to 1, 3-butylene glycol is 1: (0.5-2.5).

In a most preferred embodiment, the humectant of the present invention is glycerin and 1, 3-butylene glycol, wherein the glycerin and 1, 3-butylene glycol are present in a mass ratio of 1: 1.

emulsifier

The emulsifier of the present invention is a compound capable of forming a stable emulsion from a mixture of two or more components insoluble in each other.

In a preferred embodiment, the emulsifier according to the invention is selected from one or more of glycerol monostearate, tween 80, span 80, hydrogenated lecithin.

In a most preferred embodiment, the emulsifier of the present invention is hydrogenated lecithin.

In experiments, the inventor of the application finds that the hydrogenated lecithin is selected as the main emulsifier, so that unique skin feel can be brought. The reason why it may exist is that lecithin is an important component of biological membranes, has excellent compatibility with the skin, is an indispensable substance for stratum corneum cells, and can help the skin to reestablish a natural moisture barrier. The hydrogenated lecithin selected by the invention is prepared by hydrogenating and saturating natural lecithin from soybean, the content of hydrogenated phosphatidylcholine is not less than 70%, the stability is high, and the smell is low. The hydrogenated lecithin can form a unique bionic lamellar structure of the phospholipid in the cream, and has good skin-attaching property and affinity. It forms a protective film on the stratum corneum, building a good moisture barrier. Meanwhile, the composite material can be used as a conveying carrier for substances inside and outside the membrane, and can improve the absorption of active substances.

Because the hydrogenated lecithin has selectivity when emulsifying the grease, and the emulsifying capacity to the silicone oil and the vegetable oil is general, the inulin lauryl carbamate of natural source is selected as the auxiliary emulsifying agent, the emulsifying capacity is superior, and the oil is not selective. The two emulsifiers are compounded for use, different types of grease can be selected, the skin feel of the product is enriched, and the stability of the cream product is improved. Due to the addition of inulin lauryl carbamate, emulsion droplets with smaller sizes can be obtained, the adhesion degree of the product is further increased, and the permeability of active substances is increased;

hydrogenated lecithin has poor solubility in water and is not suitable for long-term heating. The component A is a water phase, and the component B is an oil phase, and the temperature is required to be heated to 80-85 ℃, so that the component A cannot be dissolved in the water phase or the oil phase firstly. According to the invention, hydrogenated lecithin is dispersed in the polyhydric alcohol in advance and is put into the emulsion before emulsification, so that the situation of discoloration and odor change caused by long-time high-temperature heating can be avoided. Wherein, the alcohol phase is the compound of glycerol and dihydric alcohol, which is beneficial to dispersion, and when the proportion of the polyhydric alcohol and the hydrogenated lecithin is controlled to be (15-19): (1.2-1.87), the dispersion effect of the hydrogenated lecithin in the polyol is best.

Thickening agent

The thickening agent is also called gelling agent and is a substance capable of increasing the viscosity of latex and liquid. The thickening agent can increase the viscosity of the system, keep the system in a uniform and stable suspension state or an emulsion state, or form a gel.

In a preferred embodiment, the thickener of the present invention is selected from one or more of xanthan gum, carbomer, hydroxyethyl acrylate/sodium acryloyldimethyl taurate copolymer.

In a more preferred embodiment, the thickener of the present invention is a carbomer.

In a preferred embodiment, the carbomer of the present invention is selected from one or more of carbomer 940, carbomer 941, carbomer U10, carbomer U20.

In a most preferred embodiment, the carbomer of the present invention is carbomer 940.

Preservative

The preservative according to the present invention is a substance added to cosmetics for the purpose of inhibiting the growth and reproduction of microorganisms in the cosmetics.

The preservative is selected from one or more of phenoxyethanol, phenoxymethanol and propyl hydroxybenzoate.

In a preferred embodiment, the preservative of the present invention is phenoxyethanol.

It should be noted that the following examples are only for illustrating the present invention and should not be construed as limiting the scope of the present invention, and that the insubstantial modifications and adaptations of the present invention by those skilled in the art based on the above disclosure are still within the scope of the present invention.

In addition, the raw materials used are commercially available from national chemical reagents, unless otherwise specified.

Examples

Inulin lauryl carbamate (CAS: 478483-27-1) in this example.

Cetearyl alcohol (CAS: 246159-33-1) is used in this example.

In this example, squalane (CAS: 111-01-3) was used.

Polydimethylsiloxane (CAS: 63148-62) in this example.

Hydrogenated lecithin (CAS: 92128-87-5) was used in this example.

In this example, carbomer 940 was purchased from pharmaceutical chemicals, inc.

Example 1

Embodiment 1 provides a moisturizing skin care composition, which at least comprises a component A: 45 parts of water, 0.2 part of neutralizer and 0.5 part of auxiliary emulsifier; and B component: 12 parts of a softening agent, 2 parts of a film forming agent and 1 part of an antioxidant; and C, component C: 15 parts of a humectant and 1.5 parts of an emulsifier; and (D) component: 0.25 part of thickening agent and 0.5 part of preservative.

The neutralizing agent is triethanolamine.

The coemulsifier is inulin lauryl carbamate.

The softening agent is cetearyl alcohol, squalane, meadowfoam seed oil and hydrogenated coconut oil, wherein the mass ratio of the cetearyl alcohol to the squalane to the meadowfoam seed oil to the hydrogenated coconut oil is 2: 10: 2: 1.5.

the film forming agent is polydimethylsiloxane.

The antioxidant is tocopherol.

The humectant is glycerol and 1, 3-butanediol, and the mass ratio of the glycerol to the 1, 3-butanediol is 1: 1.

the emulsifier is hydrogenated lecithin.

The thickening agent is carbomer.

The carbomer is carbomer 940.

The preservative is phenoxyethanol.

A skin care cream for moisturizing is prepared from the skin care composition for moisturizing.

The preparation method of the face cream comprises the following steps:

(1) mixing the components in the component A according to the weight part, heating to 83 ℃, uniformly stirring, and putting into a reaction kettle;

(2) mixing the components in the component B according to the parts by weight, heating to 83 ℃, uniformly stirring, and then putting into a reaction kettle for emulsification, wherein the homogenizing speed is 5500rpm, and the time is 8 min;

(3) mixing the components in the component C according to the weight parts, heating at 57 ℃, stirring and dispersing uniformly, and putting into a reaction kettle before emulsification;

(4) and (3) when the temperature of the system is reduced to 45 ℃, putting the components in the component D into a reaction kettle, and homogenizing and dispersing uniformly at a homogenizing speed of 3000rpm to obtain the final product.

Example 2

Embodiment 2 provides a moisturizing skin care composition, which at least comprises the following components in parts by weight: 30 parts of water, 0.15 part of neutralizer and 0.1 part of auxiliary emulsifier; and B component: 8 parts of a softening agent, 1 part of a film forming agent and 0.5 part of an antioxidant; and C, component C: 12 parts of a humectant and 1 part of an emulsifier; and (D) component: 0.2 part of thickening agent and 0.1 part of preservative.

The neutralizing agent is triethanolamine.

The coemulsifier is inulin lauryl carbamate.

the film forming agent is polydimethylsiloxane.

The antioxidant is tocopherol.

the emulsifier is hydrogenated lecithin.

The thickening agent is carbomer.

The carbomer is carbomer 940.

The preservative is phenoxyethanol.

The preparation method of the face cream comprises the following steps:

Example 3

Embodiment 3 provides a moisturizing skin care composition, which at least comprises the following components in parts by weight: 60 parts of water, 0.3 part of neutralizer and 1 part of co-emulsifier; and B component: 19 parts of a softening agent, 3 parts of a film forming agent and 1.5 parts of an antioxidant; and C, component C: 24 parts of a humectant and 3 parts of an emulsifier; and (D) component: 0.3 part of thickening agent and 1 part of preservative.

The neutralizing agent is triethanolamine.

The coemulsifier is inulin lauryl carbamate.

the film forming agent is polydimethylsiloxane.

The antioxidant is tocopherol.

the emulsifier is hydrogenated lecithin.

The thickening agent is carbomer.

The carbomer is carbomer 940.

The preservative is phenoxyethanol.

The preparation method of the face cream comprises the following steps:

Example 4

Embodiment 4 provides a moisturizing skin care composition, which at least comprises the following components in parts by weight: 45 parts of water and 0.2 part of neutralizer; and B component: 12 parts of a softening agent, 2 parts of a film forming agent and 1 part of an antioxidant; and C, component C: 15 parts of a humectant and 1.5 parts of an emulsifier; and (D) component: 0.25 part of thickening agent and 0.5 part of preservative.

The neutralizing agent is triethanolamine.

the film forming agent is polydimethylsiloxane.

The antioxidant is tocopherol.

the emulsifier is hydrogenated lecithin.

The thickening agent is carbomer.

The carbomer is carbomer 940.

The preservative is phenoxyethanol.

The preparation method of the face cream comprises the following steps:

Example 5

Embodiment 5 provides a moisturizing skin care composition, which at least comprises the following components in parts by weight: 45 parts of water, 0.2 part of neutralizer and 0.5 part of auxiliary emulsifier; and B component: 12 parts of a softening agent, 2 parts of a film forming agent and 1 part of an antioxidant; and C, component C: 15 parts of a humectant and 1.5 parts of an emulsifier; and (D) component: 0.25 part of thickening agent and 0.5 part of preservative.

The neutralizing agent is triethanolamine.

The coemulsifier is stearic acid ethylene glycol diester (CAS: 627-83-8).

the film forming agent is polydimethylsiloxane.

The antioxidant is tocopherol.

the emulsifier is hydrogenated lecithin.

The thickening agent is carbomer.

The carbomer is carbomer 940.

The preservative is phenoxyethanol.

The preparation method of the face cream comprises the following steps:

Example 6

Embodiment 6 provides a moisturizing skin care composition, which at least comprises the following components in parts by weight: 45 parts of water, 0.2 part of neutralizer and 0.5 part of auxiliary emulsifier; and B component: 12 parts of a softening agent, 2 parts of a film forming agent and 1 part of an antioxidant; and C, component C: 15 parts of a humectant; and (D) component: 0.25 part of thickening agent and 0.5 part of preservative.

The neutralizing agent is triethanolamine.

The coemulsifier is inulin lauryl carbamate.

the film forming agent is polydimethylsiloxane.

The antioxidant is tocopherol.

the thickening agent is carbomer.

The carbomer is carbomer 940.

The preservative is phenoxyethanol.

The preparation method of the face cream comprises the following steps:

Example 7

Embodiment 7 provides a moisturizing skin care composition, which at least comprises the following components in parts by weight: 45 parts of water, 0.2 part of neutralizer and 0.5 part of auxiliary emulsifier; and B component: 12 parts of a softening agent, 2 parts of a film forming agent and 1 part of an antioxidant; and C, component C: 15 parts of a humectant and 1.5 parts of an emulsifier; and (D) component: 0.25 part of thickening agent and 0.5 part of preservative.

The neutralizing agent is triethanolamine.

The coemulsifier is inulin lauryl carbamate.

the film forming agent is polydimethylsiloxane.

The antioxidant is tocopherol.

the emulsifier is glyceryl stearate (CAS: 9004-99-3).

The thickening agent is carbomer.

The carbomer is carbomer 940.

The preservative is phenoxyethanol.

The preparation method of the face cream comprises the following steps:

Example 8

Embodiment 8 provides a moisturizing skin care composition, which at least comprises the following components in parts by weight: 45 parts of water, 0.2 part of neutralizer and 0.5 part of auxiliary emulsifier; and B component: 12 parts of a softening agent, 2 parts of a film forming agent and 1 part of an antioxidant; and C, component C: 10 parts of humectant and 0.5 part of emulsifier; and (D) component: 0.25 part of thickening agent and 0.5 part of preservative.

The neutralizing agent is triethanolamine.

The coemulsifier is inulin lauryl carbamate.

the film forming agent is polydimethylsiloxane.

The antioxidant is tocopherol.

the emulsifier is hydrogenated lecithin.

The thickening agent is carbomer.

The carbomer is carbomer 940.

The preservative is phenoxyethanol.

The preparation method of the face cream comprises the following steps:

Example 9

Example 9 provides a moisturizing skin care composition comprising, in parts by weight, at least component a: 45 parts of water, 0.2 part of neutralizer and 0.5 part of auxiliary emulsifier; and B component: 12 parts of a softening agent, 2 parts of a film forming agent and 1 part of an antioxidant; and C, component C: 25 parts of a humectant and 5 parts of an emulsifier; and (D) component: 0.25 part of thickening agent and 0.5 part of preservative.

The neutralizing agent is triethanolamine.

The coemulsifier is inulin lauryl carbamate.

the film forming agent is polydimethylsiloxane.

The antioxidant is tocopherol.

the emulsifier is hydrogenated lecithin.

The thickening agent is carbomer.

The carbomer is carbomer 940.

The preservative is phenoxyethanol.

The preparation method of the face cream comprises the following steps:

Example 10

Example 10 provides a moisturizing skin care composition comprising, in parts by weight, at least component a: 45 parts of water, 0.2 part of neutralizer and 0.5 part of auxiliary emulsifier; and B component: 12 parts of a softening agent, 2 parts of a film forming agent and 1 part of an antioxidant; and C, component C: 15 parts of a humectant and 1.5 parts of an emulsifier; and (D) component: 0.25 part of thickening agent and 0.5 part of preservative.

The neutralizing agent is triethanolamine.

The coemulsifier is inulin lauryl carbamate.

the film forming agent is polydimethylsiloxane.

The antioxidant is tocopherol.

The humectant is glycerol and 1, 3-butanediol, and the mass ratio of the glycerol to the 1, 3-butanediol is 1: 0.2.

the emulsifier is hydrogenated lecithin.

The thickening agent is carbomer.

The carbomer is carbomer 940.

The preservative is phenoxyethanol.

The preparation method of the face cream comprises the following steps:

Example 11

Example 11 provides a moisturizing skin care composition comprising, in parts by weight, at least component a: 45 parts of water, 0.2 part of neutralizer and 0.5 part of auxiliary emulsifier; and B component: 12 parts of a softening agent, 2 parts of a film forming agent and 1 part of an antioxidant; and C, component C: 15 parts of a humectant and 1.5 parts of an emulsifier; and (D) component: 0.25 part of thickening agent and 0.5 part of preservative.

The neutralizing agent is triethanolamine.

The coemulsifier is inulin lauryl carbamate.

the film forming agent is polydimethylsiloxane.

The antioxidant is tocopherol.

The humectant is glycerol and 1, 3-butanediol, and the mass ratio of the glycerol to the 1, 3-butanediol is 1: 3.

the emulsifier is hydrogenated lecithin.

The thickening agent is carbomer.

The carbomer is carbomer 940.

The preservative is phenoxyethanol.

The preparation method of the face cream comprises the following steps:

Evaluation of Performance

1. And (3) stability testing: the compositions prepared in examples 1 to 11 were allowed to stand at room temperature for 30 days to observe whether or not there was a delamination, and the results are shown in table 1 below.

2. And (3) centrifugal test: the compositions prepared in examples 1 to 11 were centrifuged at 3000r/min for 30min to observe whether or not there was any delamination, and the results are shown in Table 1 below.

3. Testing the moisturizing and moistening effects: 180 out of 25 to 55 year old volunteers were randomly divided into 9 groups of 20 persons, and the moisturizing and skin-care creams prepared in example 1 and examples 4 to 11 were used, respectively.

The test method comprises the following steps: all volunteers performed face cleaning treatment before sleeping every night, and each person used the distributed moisturizing cream on the right face and did not use the moisturizing cream on the left face. The trial period is one month, and the trial result is counted on the 30 th day. Effectively expressed that the left face and the right face of a test person are obviously finer, whiter, smoother, less fine lines on the face, obviously fades color spots, and is more white and elastic than the face; null means no change in the texture of the skin of the subject; the results are shown in table 1 below, where the skin quality of the test subjects was generally improved but the effect was not significant, ranging between effective and ineffective.

TABLE 1

4. Skin moisture, roughness, smoothness test:

the test method comprises the following steps: randomly selecting 30 volunteers, respectively cleaning the inner sides of the arms of the volunteers, wiping to dry, then resting for 30 minutes at constant temperature (21.2 ℃) and constant humidity (51% humidity), then testing the base value for 0h, and respectively testing again 3h and 6h after sample application. The water content of the skin of the volunteers after the skin cream is applied for 0h, 3h and 6h and the water content of the skin cream is not applied by using a corneometer 825, and the roughness and the smoothness of the skin of the volunteers after the skin cream is applied for 0h, 3h and 6h and the roughness and the smoothness of the skin cream are not applied by using VC 20plus, wherein the test average values are shown in the following tables 2 and 3.

5. The skin care cream prepared in example 1 was applied to the part of the hand in the tiger's mouth, and the immediate effect thereof is shown in fig. 3. FIG. 2 is a diagram showing the effect of skin cream not applied to the first web.

TABLE 2 stratum corneum moisture content (a.u)

Time of day	0h	3h	6h
				Blank space	28.27	34.31	34.43
Face cream	29.48	52.38	47.97

TABLE 3 roughness (SEr)

Time of day	0h	3h	6h
				Blank space	1.74	1.69	2.08
Face cream	2.43	9.44	8.5

According to the test, after the face cream is used by the volunteer, the moisture content of the skin of the volunteer is increased, the roughness is also improved, and the effect is better as the using time is longer. Fig. 1 is a photographic image of the effect of the applied skin cream and the unapplied skin cream in different time periods by adopting visiospav 20, and it can be known from the photographic image that after the skin cream is applied, the moisturizing effect is better, and the dry lines are effectively reduced. As can be seen from the comparison between FIG. 2 and FIG. 3, the cream has improved dry and crumbly skin, and has a very good moistening effect.

The foregoing examples are merely illustrative and serve to explain some of the features of the method of the present invention. The appended claims are intended to claim as broad a scope as is contemplated, and the examples presented herein are merely illustrative of selected implementations in accordance with all possible combinations of examples. Accordingly, it is applicants' intention that the appended claims are not to be limited by the choice of examples illustrating features of the invention. Also, where numerical ranges are used in the claims, subranges therein are included, and variations in these ranges are also to be construed as possible being covered by the appended claims.

Claims

1. A skin care composition for moisturizing is characterized by at least comprising a component A in parts by weight: 20-65 parts of water, 0.15-0.3 part of neutralizer and 0.1-1 part of co-emulsifier; and B component: 8-19 parts of a softening agent, 1-3 parts of a film forming agent and 0.5-1.5 parts of an antioxidant; and C, component C: 12-24 parts of a humectant and 1-3 parts of an emulsifier; and (D) component: 0.2 to 0.3 portion of thickening agent and 0.1 to 1 portion of preservative.

2. The skin care composition for moisturizing according to claim 1, wherein the emollient is selected from one or more of cetostearyl alcohol, squalane, cetyl alcohol, jojoba oil, caprylic/capric triglyceride, stearic acid, lanolin, meadowfoam seed oil, hydrogenated coconut oil.

3. The skin care composition for moisturizing according to claim 2, wherein the emollient is cetearyl alcohol, squalane, meadowfoam seed oil and hydrogenated coconut oil, wherein the mass ratio of cetearyl alcohol, squalane, meadowfoam seed oil and hydrogenated coconut oil is (1-3): (5-11): (1-3): (1-2).

4. The skin care composition for moisturizing according to claim 1, wherein the film forming agent is one or more selected from polydimethylsiloxane, phenyl trimethicone and cyclopentasiloxane.

5. The skin care composition for moisturizing according to claim 1, wherein the moisturizing agent is selected from one or more of glycerin, propylene glycol, sodium hyaluronate, collagen, sodium lactate, 1, 3-butylene glycol, ethylhexyl glycerin, hyaluronic acid, trehalose, a purslane extract, cholesterol, sodium polyglutamate, and sucrose.

6. The moisturizing skin care composition as claimed in claim 5, wherein the moisturizing agent is glycerin and 1, 3-butylene glycol, wherein the mass ratio of glycerin to 1, 3-butylene glycol is 1: (0.5-2.5).

7. The skin care composition for moisturizing according to claim 1, wherein the emulsifier is one or more selected from the group consisting of glyceryl monostearate, cetearyl alcohol, tween 80, span 80 and hydrogenated lecithin.

8. The moisturizing skin care composition as claimed in claim 1, wherein the thickener is one or more selected from xanthan gum, carbomer, hydroxyethyl acrylate/sodium acryloyldimethyl taurate copolymer.

9. A skin cream for moisturizing, characterized in that the skin cream is prepared from the skin care composition for moisturizing as claimed in any one of claims 1 to 8.

10. A method for preparing the skin cream for moisturizing according to claim 9, comprising at least the steps of: