JP2005139155A - Hair dye composition - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hair dye composition which does not damage the moistness inherent in hair, inhibits broken hairs, split hair ends, and the dryness of hair, and excels in feeling of use. <P>SOLUTION: The hair dye composition comprises (A) a diamide compound represented by general formula (1) (wherein R<SP>1</SP>is a 1-12C straight-chain or branched-chain hydrocarbon group which may be substituted with a hydroxyl group and/or an alkoxy group; R<SP>2</SP>is a 1-5C straight-chain or branched-chain divalent hydrocarbon group; and R<SP>3</SP>is a 1-22C straight-chain or branched-chain divalent hydrocarbon group), (B) a direct dye, and (C) a cationic polymer. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a hair dye composition that suppresses cut hairs, split ends, and softness without impairing the original moisture of the hair, and is excellent in usability.

  Hair dyes that use direct dyes as dyeing components do not damage hair compared to oxidative hair dyes that are dyed by oxidation because the hair dyeing mechanism is mainly due to adsorption, but acid dyes and basic dyes are not used. In order to effectively penetrate into the hair, it is necessary to adjust the pH of the composition to slightly stronger acid or alkaline conditions. It is known that the hair treated with such a hair dye feels dry and stiff, and furthermore, split hairs and breaks are easily generated by daily hair care behavior such as washing and styling. Yes.

  For this reason, it is generally known that silicones, animal and plant extracts, conditioning polymers and the like are blended in the hair dye composition for the purpose of suppressing hair damage (see, for example, Patent Documents 1 to 4). However, the current situation is that a sufficient effect is not obtained.

Japanese Unexamined Patent Publication No. 4-74113 Japanese Patent Laid-Open No. 5-105615 JP-A-4-282308 JP-A-3-294217

  Accordingly, an object of the present invention is to provide a hair dye composition that does not impair the original moisture of the hair, suppresses cut hairs, split ends, and roughness, and has an excellent feeling of use.

The present inventor has found that the above problems can be solved by blending a specific diamide compound and a cationic polymer into a hair dye composition containing a direct dye as a dyeing component.

The present invention includes the following components (A) to (C)
(A) Diamide compound represented by the general formula (1)

[Wherein, R ¹ represents a linear or branched hydrocarbon group having 1 to 12 carbon atoms which may be substituted by a hydroxyl group and / or an alkoxy group, and R ² represents a linear or branched chain having 1 to 5 carbon atoms. A branched divalent hydrocarbon group is represented, and R ³ represents a linear or branched divalent hydrocarbon group having 1 to 22 carbon atoms. ]
(B) Direct dye
(C) A hair dye composition containing a cationic polymer is provided.

  The hair dye composition of the present invention does not impair the original moisture of the hair, suppresses cut hairs, split ends, and softness, and has an excellent feeling of use.

[Component (A): Diamide compound]
In the general formula (1) showing the diamide compound of the component (A) used in the present invention, R ¹ may be substituted with 1 to 3 groups selected from a hydroxyl group and an alkoxy group having 1 to 6 carbon atoms. A linear or branched alkyl group having 1 to 12 carbon atoms is preferred. Among them, an unsubstituted alkyl group having 1 to 12 carbon atoms, or 1 to 2 hydroxyl groups, one alkoxy group having 1 to 6 carbon atoms, or one hydroxyl group and one alkoxy group having 1 to 6 carbon atoms. A substituted alkyl group having 2 to 12 carbon atoms is more preferred.

In the general formula (1), R ² is preferably a linear or branched alkylene group having 2 to 5 carbon atoms, particularly 2 to 3 carbon atoms.

In general formula (1), R ³ is preferably a linear or branched divalent hydrocarbon group having 2 to 22 carbon atoms, particularly a linear or branched alkylene group having 11 to 22 carbon atoms, and 1 Alkenylene groups having ˜4 double bonds are preferred.

Particularly preferred diamide compounds as component (A) are compounds in which the above-mentioned preferred groups are combined as R ¹ , R ² and R ³ in general formula (1). Specific examples of the particularly preferred diamide compound (1) include the following compounds.

  The diamide compound (1) can be produced by a known amide synthesis method. For example, according to the following reaction formula, the corresponding dicarboxylic acid (2) or a reactive derivative thereof (ester, acid halide, acid anhydride, etc.) By condensing amine (3), target diamide compound (1) can be produced efficiently and inexpensively (WO 00/61097 pamphlet).

  The diamide compound (1) of component (A) may be used in combination of two or more thereof, and the content of the diamide compound (1) is not limited in the total composition from the viewpoint of sufficiently suppressing hair damage and avoiding a decrease in feeling of use. It is preferably 0.01 to 30% by weight, more preferably 0.1 to 20% by weight, particularly preferably 0.5 to 15% by weight.

[Component (B): Direct dye]
Examples of the direct dye of component (B) include acid dyes, nitro dyes, disperse dyes, and basic dyes. Examples of acid dyes include Blue No. 1, Purple No. 401, Black No. 401, Orange No. 205, Red No. 227, Red No. 106, Yellow No. 203, Acid Orange 3, etc., and nitro dyes include 2-nitro -p-phenylenediamine, 2-amino-6-chloro-4-nitrophenol, 3-nitro-p-hydroxyethylaminophenol, 4-nitro-o-phenylenediamine, 4-amino-3-nitrophenol, 4- Hydroxypropylamino-3-nitrophenol, HC Blue No.2, HC Orange No.1, HC Red No.1, HC Yellow No.2, HC Yellow No.4, HC Yellow No.5, HC Red No.3 N, N-bis- (2-hydroxyethyl) -2-nitro-p-phenylenediamine and the like, and disperse dyes include Disperse Violet 1, Disperse Blue 1, Disperse Black 9 and the like. Basic dyes such as Basic Blue 99 and Basic Kuburaun 16, Basic Brown 17, Basic Red 76, Basic Red 51, Basic Yellow 57, Basic Yellow 87, Basic Orange 31, and the like.

  Two or more direct dyes may be used in combination, or may be used in combination with an oxidation dye intermediate. The content thereof is preferably 0.001 to 5% by weight, particularly 0.01 to 3% by weight in the total composition.

[Component (C): Cationic polymer]
The cationic polymer of component (C) refers to a polymer having a cationic group or a group that can be ionized to a cationic group, and includes an amphoteric polymer that is cationic as a whole. That is, as the cationic polymer, an aqueous solution containing an amino group or an ammonium group in the side chain of the polymer chain or containing a diallyl quaternary ammonium salt as a structural unit, such as a cationized cellulose derivative, a cationic starch, a cationization Examples include guar gum derivatives, diallyl quaternary ammonium salt polymers or copolymers, and quaternized polyvinylpyrrolidone derivatives. Among these, diallyl quaternary ammonium salt is included as a structural unit particularly in terms of softness during shampooing, smoothness and ease of fingering, ease of packing during drying and moisturizing effect, and stability of the agent. Polymers, quaternized polyvinyl pyrrolidone derivatives, and cationized cellulose derivatives are preferable, diallyl quaternary ammonium salt polymers or copolymers, and cationized cellulose derivatives are more preferable, diallyl quaternary ammonium salt polymers or copolymers. Most preferred.

  As the skeleton of the diallyl quaternary ammonium salt polymer, one represented by the following general formula (4) or (5) is preferable.

[In the formula, R ⁴ and R ⁵ may be the same or different, and are a hydrogen atom, an alkyl group having 1 to 18 carbon atoms, an aryl group (such as a phenyl group), a hydroxyalkyl group, an amidoalkyl group, a cyanoalkyl group, an alkoxy Represents an alkyl group or a carboalkoxyalkyl group, R ⁶ and R ⁷ may be the same or different, each represents a hydrogen atom, an alkyl group having 1 to 3 carbon atoms or a phenyl group, and X ⁻ represents an anion (chloride ion, Bromide ion, iodide ion, sulfate anion, sulfonate anion, methyl sulfate anion, phosphate anion, nitrate anion, etc.). ]

  Examples of the monomer constituting the copolymer with the diallyl quaternary ammonium salt include acrylic acid, methacrylic acid or salts thereof, and acrylamide, and acrylic acid, methacrylic acid or salts thereof are particularly preferable. A copolymer of acrylic acid, methacrylic acid or a salt thereof and a diallyl quaternary ammonium salt has a high constituent ratio of diallyl quaternary ammonium salt, and becomes a cationic polymer as a whole.

  Specific examples of the polymer or copolymer of diallyl quaternary ammonium salt include dimethyldiallylammonium chloride polymer (Polyquaternium-6, such as Marquat 100; ONDEO Nalco), dimethyldiallylammonium chloride / acrylic acid copolymer (polyquaternium). -22, such as Marquat 280, 295; ONDEO Nalco), dimethyldiallylammonium chloride / acrylamide copolymer (Polyquaternium-7, such as Marquat 550; ONDEO Nalco), etc. preferable.

  As the quaternized polyvinylpyrrolidone derivative, those represented by the following general formula (6) are preferable.

[Wherein R ⁸ is a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, R ⁹ , R ¹⁰ and R ¹¹ may be the same or different, and a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, or a hydroxyalkyl group. , An amidoalkyl group, a cyanoalkyl group, an alkoxyalkyl group or a carboalkoxyalkyl group, Y represents an oxygen atom or an imino group, r represents an integer of 1 to 10, and s and t represent a sum of 20 to 8000. X ⁻ represents the same meaning as described above. ]

  The molecular weight of the quaternized polyvinylpyrrolidone derivative used in the present invention is preferably 10,000 to 2,000,000, particularly preferably 50,000 to 1,500,000. Examples of commercially available products include Guff Coat 734, 755, and 755N (hereinafter referred to as IP Japan).

  As the cationized cellulose derivative, for example, those represented by the following general formula (7) are preferable.

[Wherein, A represents a residue of an anhydroglucose unit, f represents an integer of 50 to 20,000, and R ¹² represents a substituent represented by the following general formula (8). ]

[Wherein R ¹³ and R ¹⁴ represent an alkylene group having 2 or 3 carbon atoms, g represents an integer of 0 to 10, h represents an integer of 0 to 3, and i represents an integer of 0 to 10] R ¹⁵ represents an alkylene group having 1 to 3 carbon atoms or a hydroxyalkylene group, R ¹⁶ , R ¹⁷ and R ¹⁸ may be the same or different and each represents an alkyl group, aryl group or aralkyl group having up to 10 carbon atoms, Moreover, you may form the heterocyclic ring containing the nitrogen atom in a formula. X ⁻ has the same meaning as described above. ]

  The cation substitution degree of the cationized cellulose derivative, that is, the average value of h per anhydroglucose unit is preferably 0.01 to 1, particularly 0.02 to 0.5. Moreover, the sum total of g + i is 1-3 on average. If the degree of cation substitution is less than 0.01, it is not sufficient and may exceed 1, but 1 or less is preferable from the viewpoint of reaction yield. The molecular weight of the cationized cellulose derivative used here is preferably 100,000 to 3,000,000. Commercially available products include Leo Guard G, GP (Lion), Polymer JR-125, JR-400, JR-30M, LR-400, LR-30M (Union Carbide). Can be mentioned. Examples of other cationized cellulose derivatives include hydroxyethyl cellulose dimethyl diallylammonium chloride, and examples of commercially available products include Cellcoat H-100 and L-200 (National Starch and Chemical Co., Ltd.).

  These cationic polymers may be used in combination of two or more, and the higher the content, the higher the effect. However, when the content is too large, the stability is poor and the viscosity of the agent alone or at the time of mixing is reduced. From these points, 0.001 to 20% by weight in the total composition is preferable, 0.01 to 10% by weight, particularly 0.05 to 5% by weight is preferable.

[Component (D): Silicones]
The hair dye of the present invention preferably further contains silicones as the component (D) in order to give an excellent feeling of use without impairing the original moisture of the hair. Examples of silicones include polysiloxanes, modified silicones (amino-modified silicones, fluorine-modified silicones, alcohol-modified silicones, polyether-modified silicones, epoxy-modified silicones, alkyl-modified silicones, etc.), and cyclic polysiloxanes. Amino-modified silicones are preferred, and it is particularly preferred to use dimethylpolysiloxane and amino-modified silicone in combination.

(Polysiloxanes)
Polysiloxanes include dimethylpolysiloxane (INCI name: dimethicone), methylphenyl polysiloxane, dimethylpolysiloxane having hydroxy end groups (INCI name: dimethiconol), and slightly crosslinked silicones described in WO96 / 31188. Examples include gums.

  In particular, highly polymerized silicones having a number average degree of polymerization of 1000 or more, more preferably 1500 or more, particularly 2000 or more and less than 20000 are preferred. Specific examples of commercially available highly polymerized silicones with a number average degree of polymerization of 1000 or more include SH200-1,000,000cs (Toray Dow Corning Silicone), TSF451-100MA (GE Toshiba Silicone), BY11-026 (Toray)・ Dow Corning Silicone; diluted solution of highly polymerized silicone with low viscosity silicone), KF9008 (Shin-Etsu Silicone; diluted solution of highly polymerized silicone with cyclic silicone), BY22-050A (Toray Dow Corning Silicone; highly polymerized) Cationic emulsion of silicone), BY22-060 (Toray Dow Corning Silicone; Cationic emulsion of a solution of highly polymerized silicone diluted with low viscosity silicone), BY22-020 (Toray Dow Corning Silicone; highly polymerized silicone) Cationic emulsion of solution diluted with liquid paraffin), KM904 (Shin-Etsu Silicone Co., Ltd .; Takashige) And a cationic emulsion of a solution obtained by diluting a synthetic silicone with a low-viscosity silicone).

(Amino-modified silicone)
The amino-modified silicone may be any silicone having an amino group or an ammonium group, such as amino-modified silicone oil in which all or part of the terminal hydroxyl groups are blocked with methyl groups, amodimethicone in which the terminals are not blocked, etc. There is. Preferred amino-modified silicones include those represented by the following general formula (9).

[Wherein R ¹⁹ represents a hydroxyl group, a hydrogen atom or R, R represents a substituted or unsubstituted monovalent hydrocarbon group having 1 to 20 carbon atoms, A represents R, a group —R ′-(NHCH ₂ CH ₂ ) _n NH ₂ , a group OR or a hydroxyl group, R ′ represents a divalent hydrocarbon group having 1 to 8 carbon atoms, n represents a number of 0 to 3, and p and q are sums of numbers averaged 10 to less than 20000, preferably 10 to less than 3000, more preferably 30 to less than 1000, and still more preferably 40 to less than 800. The amino equivalent is 200 g / mol to 100,000 g / mol, preferably 200 g / mol to 30,000 g / mol, more preferably 400 g / mol to 10,000 g / mol, still more preferably 600 g / mol to 5000 g / mol. . ]

Specific examples of suitable commercially available amino-modified silicones include SF8451C (Toray Dow Corning Silicone, viscosity 600 mm ² / s, amino equivalent 1700 g / mol), SF8452C (Toray Dow Corning Silicone, viscosity 700 mm ² / s, amino equivalent weight 6400g / mol), SF8457C (Dow Corning Toray silicone Co., viscosity 1200 mm ² / s, amino equivalent weight 1800g / mol), KF8003 (GE Toshiba silicones Co., viscosity 1850 mm ² / s, an amino equivalent of 2000 g / mol), amino modified silicone oils such as KF867 (GE Toshiba Silicone, viscosity 1300 mm ² / s, amino equivalent 1700 g / mol), and amojime such as SM8704C (Toray Dow Corning Silicone, amino equivalent 1800 g / mol) A corn emulsion is mentioned. The amino-modified silicone oil may be blended in the form of an emulsion. Emulsions of amino-modified silicones can be obtained by mechanical emulsification (high shear mechanical mixing of amino-modified silicone and water), chemical emulsification (emulsification of amino-modified silicone with water and emulsifier), or combinations thereof, or by emulsion polymerization. Can be prepared.

  The total content of silicones is preferably from 0.02 to 40% by weight, more preferably from 0.1 to 20% by weight, particularly preferably from 0.2 to 15% by weight, based on the total composition, from the viewpoint of sufficient effects and suppression of stickiness. The content ratio of each silicone is preferably such that the converted amino equivalent represented by the following formula is 500 to 100,000 g / mol, more preferably 1000 to 80,000 g / mol, and particularly 2000 to 50,000 g. A range of / mol is preferred.

Equivalent amino equivalent (g / mol) = [total weight of all silicones in 1 g of total composition (g / g)] / [total number of amino groups, imino groups and ammonium groups of amino-modified silicone in 1 g of total composition (Mol / g)].

  Here, “total weight of all silicones in 1 g of composition (g / g)” and “total number of moles of amino groups, imino groups and ammonium groups of amino-modified silicone in 1 g of composition (mol / g)” ”Fractionates silicones from the hair dye composition, quantifies the total weight (g) of all silicones, and the total number of moles (mol) of amino groups, imino groups and ammonium groups of the amino-modified silicone, These can be determined by converting them into the amount per 1 g of the composition. And the conversion amino equivalent (g / mol) should just be calculated using the said conversion amino equivalent calculation formula.

  (D) When the silicone is contained, the weight ratio of (C) cationic polymer (active amount) :( D) silicone is preferably 50: 1 to 1:50, more preferably 50: 1 to 1:10. preferable.

[Component (D): Organic solvent]
In order to effectively permeate the organic solvent into the hair, the hair dye composition of the present invention preferably further contains an organic solvent as component (D). Examples of such an organic solvent include monohydric alcohols having an alkyl group having 1 to 6 carbon atoms such as ethanol, 1-propanol, 2-propanol, 1-butanol, and 2-butanol; propanediol, butanediol, and pentanediol. Hexanediol, hexanetriol, heptanediol, heptanetriol, octanediol, octanetriol, isopreneglycol, propylene glycol, glycerin, diethylene glycol monoethyl ether, diethylene glycol diethyl ether, ethylene glycol monoethyl ether, etc. Divalent or higher alcohols or ethers thereof; N-methyl-2-pyrrolidone, N-ethyl-2-pyrrolidone, N-propyl-2-pyrrolidone, N-butyl-2-pyrrolidone, N-cyclohexyl-2-pyrrolidone, etc. N-alkylpyrrolidone which is liquid at a temperature; lower alkylene carbonate such as ethylene carbonate and propylene carbonate; benzyl alcohol, 2-benzyloxyethanol, cinnamyl alcohol, p-anisyl alcohol, p-methylbenzyl alcohol, phenoxyethanol, phenoxyisopropanol, Aromatic alcohols such as 2-benzylethanol and β-phenylethyl alcohol; γ-butyrolactone, γ-pentanolactone, δ-pentanolactone, γ-hexanolactone, δ-hexanolactone, γ-heptanolactone, Examples include lactones such as δ-heptanolactone, γ-octanoic acid lactone, and α-methyl-γ-butyrolactone. Among them, aromatic alcohol, lower alkylene carbonate, N-alkylpyrrolidone, lactones, especially benzyl alcohol. Methylphenol, 2-benzyloxy ethanol, propylene carbonate, .gamma.-hexanolactone lactone are preferred.

  Two or more of these organic solvents may be used in combination, and the content thereof is preferably 0.1 to 60% by weight, more preferably 1 to 50% by weight, and particularly preferably 5 to 30% by weight in the total composition.

[Higher alcohol]
The hair dye of the present invention preferably contains a higher alcohol from the viewpoint of improving touch and stability. These have the effect of forming a structure with a surfactant to prevent separation and improving the feel during rinsing.

  As the higher alcohol, those having 8 to 22 carbon atoms, particularly 16 to 22 carbon atoms are preferable, and specific examples thereof include cetyl alcohol, stearyl alcohol, behenyl alcohol, and the like, and mixtures thereof. In particular, behenyl alcohol is preferable in terms of touch.

  Two or more higher alcohols may be used in combination, and the content thereof is preferably 0.01 to 20% by weight, particularly 0.1 to 10% by weight, based on the total composition.

[Surfactant]
The hair dye of the present invention is preferably an emulsion, and preferably contains a surfactant for emulsification of silicones and higher alcohols. As the surfactant, from the viewpoint of stability, a nonionic surfactant, for example, an alkoxylation (for example, ethoxylation or propoxylation) higher alcohol having a linear or branched alkyl group having 12 to 22 carbon atoms, specifically, For example, polyoxyethylene (2-40) alkyl ether can be used in an amount of about 1 to 40% by weight, preferably about 2 to 20% by weight, based on the total composition. In consideration of the feel, it is preferable to further use a cationic surfactant such as a mono long chain alkyltrimethylammonium salt. Here, as the mono long-chain alkyltrimethylammonium salt, behenyltrimethylammonium chloride is preferable from the viewpoint of feel and emulsification performance. The weight ratio of (cationic surfactant) / (nonionic surfactant + cationic surfactant) is preferably 0.8 or less, more preferably 0.6 or less, and particularly preferably 0.4 or less.

  If the weight ratio of surfactant to higher alcohol is 10: 1 to 1:10, preferably 4: 1 to 1: 8, especially 1: 1 to 1: 4, the composition can be creamed. .

[PH]
The pH (25 ° C.) of the hair dye composition of the present invention is preferably pH 1.5 to 5, particularly pH 2.5 to 4 when an acidic dye is used as a direct dye, and a basic dye is used as a direct dye. Is preferably pH 5 to 14, particularly pH 8 to 10. Here, the pH is a value measured for the composition stock solution without dilution.

  Examples of the acid used for adjusting the pH include citric acid, malic acid, acetic acid, lactic acid, oxalic acid, tartaric acid, glycolic acid, levulinic acid, malonic acid, succinic acid, or a salt thereof; Inorganic acids such as hydrochloric acid are used, and among these, citric acid, lactic acid, glycolic acid, and levulinic acid are preferred. Examples of the alkali agent include inorganic alkali agents such as sodium hydroxide and potassium hydroxide; organic alkali agents such as monoethanolamine, diethanolamine, triethanolamine and aminopropanol; ammonia; ammonium chloride; ammonium carbonate, potassium carbonate and sodium carbonate. And carbonates such as guanidine carbonate; basic amino acids such as arginine. Among them, alkali metal hydroxides, ammonia, and monoethanolamine are preferable.

[Thickener]
The hair dye composition of the present invention may have a viscosity that can be easily applied to hair using a thickener, for example, 500 to 100,000 mPa · s. As the thickener, carboxyvinyl polymer, alkyl-modified carboxyvinyl polymer, gum arabic, carrageenan, caraya gum, gum tragacanth, carob gum, quince seed (quince), casein, dextrin, gelatin, sodium pectate, sodium alginate, methylcellulose, ethylcellulose, Carboxymethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, polyvinyl alcohol, polyvinyl methyl ether, polyvinyl pyrrolidone, sodium polyacrylate, polyacrylate amide, locust bean gum, guar gum, tamarint gum, dialkyldimethylammonium sulfate cellulose, xanthan gum, hydroxypropyl xanthan gum, Welan gum, gellan Arm, acrylic acid / methacrylic acid ester copolymers, partially crosslinked products by 1,9 decadiene methyl vinyl ether / maleic anhydride copolymer, polyethylene glycol, magnesium aluminum silicate, bentonite and the like.

[Other optional ingredients]
In addition to the above components, the hair dye composition of the present invention includes components used in normal cosmetics, such as polyols, oily components, pigments, chelating agents, fragrances, preservatives, ultraviolet absorbers, antioxidants, bactericides. An agent, a propellant, etc. can be mix | blended suitably and can be manufactured in accordance with a normal method.

(Drug type)
The form of the hair dye composition of the present invention is, for example, a dosage form suitable for dyeing hair such as a transparent liquid, an emulsion, a cream, a gel, a paste, an aerosol, and an aerosol foam. it can.

[Treatment method]
In order to dye hair using the hair dye composition of the present invention, the hair dye composition of the present invention is applied to the hair, and a sufficient time (1 to 60 minutes) for the desired color tone to appear on the hair. (Especially 5 to 40 minutes) and then rinse the hair, optionally with shampoo and rinse again, and then dry the hair. There is also a method in which the hair dye composition of the present invention is simply applied to the hair and no rinsing is required.

Example 1
According to a conventional method, the liquid hair dye composition shown in Table 1 and the cream hair dye composition shown in Table 2 were prepared.

* 1: Marquat 280 (40 wt% solution, ONDEO Nalco)
* 2: Marcote 100 (40 wt% solution, ONDEO Nalco)
* 3: Marcote 550 (8.5 wt% solution, ONDEO Nalco)
* 4: Guff coat 734 (ISP Japan)
* 5: Polymer JR-125 (Union Carbide)
* 6: Labor gum GC-M7 (Dainippon Pharmaceutical Co., Ltd.)
* 7 to * 20: Blended after mixing.

  Table 3 shows calculation examples for the hair dye compositions O, P, and S as examples of a method for calculating the converted amino equivalent.

Claims (3)

Next ingredient (A) ~ (C)
(A) Diamide compound represented by the general formula (1)

[Wherein, R ¹ represents a linear or branched hydrocarbon group having 1 to 12 carbon atoms which may be substituted by a hydroxyl group and / or an alkoxy group, and R ² represents a linear or branched chain having 1 to 5 carbon atoms. A branched divalent hydrocarbon group is represented, and R ³ represents a linear or branched divalent hydrocarbon group having 1 to 22 carbon atoms. ]
(B) Direct dye
(C) A hair dye composition containing a cationic polymer. In addition, component (D)
(D) The hair dye composition of Claim 1 containing silicones. In addition, component (E)
(E) The hair dye composition of Claim 1 or 2 containing an organic solvent.