JP5796966B2 - Hair dye composition and hair dyeing method using the same - Google Patents

Description

  The present invention relates to a hair dye composition containing a direct dye and a hair dyeing method using the same.

  A hair dye composition containing a direct dye dyes hair by the dyeing property of the direct dye on hair keratin. On the other hand, skin, such as the scalp, also contains keratin, like hair. Although the keratin constituting the hair and the keratin constituting the skin have different amino acid compositions, the direct dye tends to be easily dyed to the keratin constituting the skin. For this reason, when using a hair dye composition, it is easy to cause background dirt. As a hair dye composition that suppresses such a background stain, one containing an aromatic alcohol is known (see Patent Document 1).

JP 2000-344639 A

  Although the background stain can be suppressed by reducing the water content in the hair dye composition, the hair dyeing power tends to decrease. In this regard, for example, by adding an organic solvent such as an aromatic alcohol, the hair dyeing power can be increased. However, in a hair dye composition containing a direct dye, an organic solvent such as an aromatic alcohol, and a predetermined amount or less of water, the viscosity tends to change with time. That is, the viscosity stability is lowered.

  The present invention contains a direct dye, an organic solvent such as an aromatic alcohol, and a predetermined amount or less of water, and further contains a specific component as a thickener, while maintaining the hair dyeing power. It was made by finding to increase stability.

  An object of the present invention is to provide a hair dye composition that can easily improve the stability of viscosity while suppressing background stains and maintaining hair dyeing power, and a hair dyeing method using the same.

In order to achieve the above object, the hair dye composition of the invention described in claim 1 comprises (A) a direct dye, (B) at least one organic solvent selected from an aromatic alcohol, and an alkylene carbonate, and (C A hair dye composition containing water) and having a water content of 1.0 to 20% by mass,
As (D) a thickening agent, is summarized in that containing oligomer ester le of carboxylic acids with polyglycerol containing divalent carboxylic acids.

  The invention according to claim 2 is the hair dye composition according to claim 1, wherein the mass ratio of (C) water to at least one organic solvent selected from (B) aromatic alcohol and alkylene carbonate is It is summarized as being in the range of 0.015 to 1.0.

  The invention according to claim 3 is the hair dye composition according to claim 1 or 2, wherein the mass ratio of the (C) water to the (A) direct dye is in the range of 5.0 to 5000. This is the gist.

According to a fourth aspect of the present invention, in the hair dye composition according to any one of the first to third aspects, an oligomer ester of a carboxylic acid containing the divalent carboxylic acid and a polyglycerin (behen) (Acid / eicosanedioic acid) polyglyceryl-10.

The invention according to claim 5 is the hair dye composition according to any one of claims 1 to 4 , wherein (A) at least one selected from an acid dye and a cationic dye is used as the direct dye. Inclusion is included.

The gist of the invention described in claim 6 is that the hair dye composition according to any one of claims 1 to 5 further contains (E) an acrylic polymer.
The invention described in claim 7 is the dyeing method using the hair dye composition as claimed in any one of claims 6, applied to the hair wet with the hair dye composition This is the gist.

  According to the present invention, it is possible to provide a hair dye composition that can easily enhance the viscosity stability while suppressing background stains and maintaining hair dyeing power, and a hair dyeing method using the same.

Hereinafter, the embodiment which actualized the hair dye composition of this invention and the hair dyeing method using the same is described in detail.
The hair dye composition of the present embodiment contains (A) a direct dye, (B) at least one organic solvent selected from aromatic alcohols and alkylene carbonates, and (C) water. (C) The water content is 1.0 to 20% by mass. The hair dye composition contains (D) at least one selected from oligomers of carboxylic acid containing divalent carboxylic acid and polyglycerol, 12-hydroxystearic acid, and dextrin palmitate as a thickener. Yes.

  (A) The direct dye is blended for dyeing hair. Direct dyes are those that are not reactive and can develop color on their own. Specific examples of direct dyes include, for example, acid dyes, nitro dyes, basic dyes (cationic dyes), and disperse dyes.

  Specific examples of the acid dye include, for example, Red No. 2, Red No. 3, Red No. 102, Red No. 104 (1), Red No. 105 (1), Red No. 106, Red No. 201, Red No. 227, Red 230 (1), Red 230 (2), Red 231, Red 232, Red 401, Red 502, Red 503, Red 504, Red 506, Yellow 4 and Yellow 5 Yellow 202 (1), Yellow 202 (2), Yellow 203, Yellow 402, Yellow 403 (1), Yellow 406, Yellow 407, Orange 205, Orange 207, Orange No. 402, Green No. 3, Green No. 204, Green No. 205, Green No. 401, Green No. 402, Purple No. 401, Blue No. 1, Blue No. 2, Blue No. 202, Blue No. 203, Blue No. 205, Brown 201 No., Black No. 401, Acid Blue 1, A Ddoburu 3, including Acid Blue 62, Acid Black 52, Acid Brown 13, Acid Green 50, Acid Orange 6, Acid Red 14, Acid Red 35, Acid Red 73, Acid Red 184, and Brilliant Black 1.

  Specific examples of the nitro dye include, for example, 4-nitro-o-phenylenediamine, 2-nitro-p-phenylenediamine, 2-amino-4-nitrophenol, 2-amino-5-nitrophenol, picramic acid, and picric acid. , And salts thereof, HC Blue No.2, HC Blue No.4, HC Blue No.5, HC Blue No.6, HC Blue No.8, HC Blue No.9, HC Blue No.10, HC Blue No.11, HC Blue No.12, HC Blue No.13, HC Blue No.14, HC Brown No.1, HC Brown No.2, HC Green No.1, HC Orange No.1, HC Orange No. 2, HC Orange No.3, HC Orange No.5, HC Red No.1, HC Red No.3, HC Red No.7, HC Red No.8, HC Red No.9, HC Red No.10, HC Red No.11, HC Red No.13, HC Red No.14, HC Violet No.1, HC Violet No.2, HC Yellow No.4, HC Yellow No.5, HC Yellow No.6, HC Yellow No. 7, HC Yellow No. 8, HC Yellow No. 9, HC Yellow No. 10, HC Yellow No. 11, HC Yellow No. 12, HC Yellow No. 13, HC Yellow No. 14, and HC Yellow No Includes .15.

  Specific examples of the basic dye (cationic dye) include, for example, Red No. 213, Red No. 214, Basic Blue 3, Basic Blue 6, Basic Blue 7, Basic Blue 9, Basic Blue 26, Basic Blue 41, Basic Blue 99, Basic Brown 4, Basic Brown 16, Basic Brown 17, Basic Brown 1, Basic Brown 4, Basic Orange 1, Basic Orange 2, Basic Orange 1, Basic Red 2, Basic Red 22, Basic Red 46, Basic Red 76, Basic Red 118, Basic Violet 1, Basic Violet 3, Basic Violet 4, Basic Violet 10, Basic Violet 11: 1, Basic Violet 14, Basic Violet 16, Basic Yellow 11, Basic Yellow 28, and Basic Yellow 57 are included.

  Specific examples of disperse dyes include, for example, Disperse Black 9, Disperse Blue 1, Disperse Blue 3, Disperse Blue 7, Disperse Brown 4, Disperse Orange 3, Disperse Red 11, Disperse Red 15, Disperse Red 17, Disperse Violet 1, Disperse Includes Violet 4 and Disperse Violet 15.

  As direct dyes, 1-amino-4-methylanthraquinone, 1,4-diaminoanthraquinone, and salts thereof, and "Ministerial ordinance for determining tar pigments that can be used for pharmaceuticals, etc." (1960 notification, Ministry of Health and Welfare) Direct dyes defined by the above may be used.

Only one kind of direct dye may be used, or two or more kinds of direct dyes may be used in combination.
Among direct dyes, at least one selected from acidic dyes and cationic dyes is preferably used from the viewpoint of enhancing hair dyeing power.

  The content of the direct dye in the hair dye composition is preferably 0.001 to 5% by mass, more preferably 0.01 to 3% by mass. When the content of the direct dye is less than 0.001% by mass, the hair dyeing effect may not be sufficiently obtained. On the other hand, when the content of the direct dye exceeds 5% by mass, the solubility of the direct dye in the hair dye composition may not be sufficiently obtained.

  (B) At least one organic solvent selected from aromatic alcohols and alkylene carbonates has a function of directly penetrating the dye into the hair. Specific examples of the aromatic alcohol include, for example, benzyl alcohol, 2-phenylethyl alcohol, cinnamyl alcohol, phenylpropanol, 1-phenoxy-2-propanol, phenyldiglycol, α-methylbenzyl alcohol, dimethylbenzylcarbinol, benzyloxy Contains ethanol, phenoxyethanol, phenoxyisopropanol, and p-anisyl alcohol. Specific examples of the alkylene carbonate include, for example, ethylene carbonate and propylene carbonate.

  The content of the organic solvent in the hair dye composition is preferably 10 to 90% by mass, more preferably 15 to 85% by mass, further preferably 20 to 80% by mass, and most preferably 30 to 60% by mass. . When the content of the organic solvent is less than 10% by mass, the hair dyeing power tends to decrease. On the other hand, when the content of the organic solvent exceeds 90% by mass, the amount of water inevitably decreases, making it difficult to obtain an effect of further improving the hair coloring power.

(C) Water has a function of directly dissolving the dye, allowing the dye to directly penetrate into the hair, and dyeing it to the hair keratin.
The water content in the hair dye composition is 1.0 to 20% by mass, preferably 5 to 15% by mass. When the water content is less than 1.0% by mass, a sufficient amount of the direct dye cannot be dissolved. On the other hand, when the water content exceeds 20% by mass, the background is easily soiled by the direct dye.

  (D) A thickener has a function which improves the stability of the dispersion system which disperse | distributed water in oil by thickening a hair dye composition. The thickener is at least one selected from oligomeric esters of carboxylic acid containing divalent carboxylic acid and polyglycerol, 12-hydroxystearic acid, and dextrin palmitate.

  As the divalent carboxylic acid constituting the oligomer ester, for example, a divalent carboxylic acid having 6 to 22 carbon atoms is preferably used. The carbon chain of the divalent carboxylic acid may be linear or branched, and may have a cyclic structure. Specific examples of the divalent carboxylic acid include, for example, adipic acid, pimelic acid, suberic acid, azelaic acid, sebacic acid, 2,4-diethylpentanedioic acid, undecanedioic acid, dodecanedioic acid, tridecanedioic acid, and tetradecanedioic acid. Pentadecanedioic acid, hexadecanedioic acid, octadecanedioic acid, 8-ethyloctadecanedioic acid, eicosanedioic acid, dimethyleicosanedioic acid, and cyclohexanedicarboxylic acid. The carboxylic acid constituting the oligomer ester may contain a monovalent carboxylic acid. Specific examples of monovalent carboxylic acids include, for example, lauric acid, myristic acid, palmitic acid, stearic acid, isostearic acid, behenic acid, undecylenic acid, 12-hydroxystearic acid, palmitooleic acid, oleic acid, linoleic acid, Includes linolenic acid, erucic acid, docosahexaenoic acid, eicosapentaenoic acid, and isohexadecanoic acid.

  Among the thickeners, the above oligomer ester is preferably used. Among the above oligomer esters, (behenic acid / eicosanedioic acid) polyglyceryl-10 is preferably used.

  The content of the thickener in the hair dye composition is preferably 1 to 10% by mass, more preferably 2 to 8% by mass. When the content of the thickener is 1% by mass or more, viscosity stability is easily obtained. On the other hand, when content of a thickener exceeds 10 mass%, there exists a possibility that it may become difficult to apply to hair because the viscosity of a hair dye composition increases.

  (C) Mass ratio of water to at least one organic solvent selected from (B) aromatic alcohol and alkylene carbonate (mass ratio = (C) mass of water / (B) aromatic alcohol and alkylene carbonate The mass of at least one kind of organic solvent is preferably in the range of 0.015 to 1.0. By setting it as the range of this mass ratio, it becomes easy to maintain hair dyeing power while suppressing background dirt.

  The mass ratio of (C) water to (A) direct dye (mass ratio = (C) mass of water / (A) mass of direct dye) is preferably in the range of 5.0 to 5000. By making it into the range of this mass ratio, it becomes easy to improve the hair dyeing power while suppressing background stains.

  The hair dye composition preferably contains (E) an acrylic acid-based polymer from the viewpoint of enhancing the stability of viscosity when stored at a higher temperature. Specific examples of the acrylic polymer include, for example, acrylic acid / alkyl methacrylate copolymer, polyacrylic acid, polyacrylate, alkyl acrylate copolymer emulsion, acrylamide / acrylamide-2-methylpropanesulfonate Copolymer, acrylate / acryloyldimethyltaurate copolymer, polyacrylamide, vinylpyrrolidone / acrylamide-2-methylpropanesulfonate copolymer, alkyl acrylate / alkyl methacrylate / polyoxyethylene (20) A stearyl ether copolymer emulsion and an acrylic acid / vinyl isodecanoate cross-polymer are included.

Only one type of acrylic acid polymer may be used, or two or more acrylic acid polymers may be used in combination.
The content of the acrylic acid polymer in the hair dye composition is preferably 0.1 to 5% by mass, more preferably 0.5 to 3% by mass. When the content of the acrylic acid polymer is 0.1% by mass or more, the effect of increasing the viscosity stability is easily obtained. On the other hand, even if the content of the acrylic polymer exceeds 5% by mass, no further effect may be obtained.

  From the viewpoint of improving the hair dyeing power of the direct dye, the hair dye composition contains, for example, at least one aqueous solvent selected from monohydric alcohols having 1 to 3 carbon atoms, glycol, glycerin, and diethylene glycol lower alkyl ether. It can also be contained. Specific examples of the monohydric alcohol having 1 to 3 carbon atoms include, for example, methanol, ethanol, propanol, and isopropanol. Specific examples of glycols include, for example, ethylene glycol, diethylene glycol, triethylene glycol, propylene glycol, dipropylene glycol, isoprene glycol, hexylene glycol, and 1,3-butylene glycol. Specific examples of glycerin include, for example, glycerin, diglycerin, and polyglycerin. Specific examples of the diethylene glycol lower alkyl ether include, for example, diethylene glycol monoethyl ether (ethyl carbitol).

  The content of the aqueous solvent in the hair dye composition is preferably 0.1 to 70% by mass, more preferably 2 to 60% by mass. When the content of the aqueous solvent is less than 0.1% by mass, it is difficult to obtain the effect of increasing the hair dyeing power. On the other hand, when the content of the aqueous solvent exceeds 70% by mass, there is a risk that background stains are likely to occur.

  The hair dye composition may contain a penetration enhancer that directly promotes penetration of the dye. Specific examples of the penetration enhancer include, for example, monohydric alcohol having 4 to 8 carbon atoms, ethylene glycol alkyl ether, and cyclic alcohol. Specific examples of the monohydric alcohol having 4 to 8 carbon atoms include, for example, n-butanol, isobutanol, n-pentanol, n-hexanol, n-heptanol, and n-octanol. Specific examples of the ethylene glycol alkyl ether include, for example, ethylene glycol mono n-butyl ether. Specific examples of cyclic alcohols include, for example, cyclohexanol.

  For the hair dye composition, if necessary, for example, hydrocarbon oil, ester oil, higher fatty acid, higher alcohol, alkyl glyceryl ether, silicone oil, nonionic water-soluble polymer compound, surfactant, sugar, You may contain at least 1 type chosen from antiseptic | preservative, a stabilizer, a chelating agent, a pH adjuster, a plant extract, a herbal extract, a vitamin, a fragrance | flavor, a ultraviolet absorber, and antioxidant.

  Specific examples of the hydrocarbon oil include, for example, α-olefin oligomer, light isoparaffin, light liquid isoparaffin, liquid isoparaffin, liquid paraffin, squalane, polybutene, paraffin, microcrystalline wax, and petrolatum.

  Specific examples of ester oils include, for example, diisopropyl adipate, diisobutyl adipate, dioctyl adipate, 2-hexyldecyl adipate, diisostearyl adipate, isopropyl myristate, cetyl octanoate, cetyl isooctanoate, isononyl isononanoate , Isodecyl isononanoate, Isotridecyl isononanoate, Diisopropyl sebacate, Octyldodecyl myristate, Isopropyl palmitate, Butyl stearate, Stearyl stearate, Hexyl laurate, Myristyl myristate, Decyl oleate, Hexyldecyl dimethyloctanoate, Myristic acid Triisodecyl, isostearyl myristate, 2-ethylhexyl palmitate, octyldodecyl ricinoleate, having 10 to 30 carbon atoms Fatty acid cholesteryl / lanosteryl, lauryl lactate, cetyl lactate, myristyl lactate, octyldodecyl lactate, lanolin acetate, isocetyl stearate, isocetyl isostearate, cholesteryl 12-hydroxystearate, ethylene glycol di-2-ethylhexanoate, dipentaerythritol Fatty acid esters, N-alkyl glycol monoisostearate, cetyl caprate, glyceryl tricaprylate, neopentyl glycol dicaprate, diisostearyl malate, and lanolin derivatives.

  Specific examples of higher fatty acids include, for example, lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid, isostearic acid, hydroxystearic acid, oleic acid, undecylenic acid, linoleic acid, ricinoleic acid, and lanolin fatty acid.

  Specific examples of higher alcohols include, for example, lauryl alcohol, myristyl alcohol, cetyl alcohol, oleyl alcohol, stearyl alcohol, and behenyl alcohol.

Specific examples of alkyl glyceryl ethers include, for example, batyl alcohol, chimyl alcohol, seraalkyl alcohol, and isostearyl glyceryl ether.
Specific examples of silicone oil include, for example, dimethylpolysiloxane (dimethicone), methylphenylpolysiloxane, terminal hydroxyl group-modified dimethylpolysiloxane, fatty acid-modified polysiloxane, amino-modified silicone, alcohol-modified silicone, glycerin-modified silicone, aliphatic alcohol-modified poly Including siloxane, epoxy-modified silicone, fluorine-modified silicone, cyclic silicone, alkyl-modified silicone, and polyether-modified silicone.

  Specific examples of the nonionic water-soluble polymer compound include, for example, hydroxyethylcellulose, hydroxypropylmethylcellulose, dextrin, guar gum, and polyvinylpyrrolidone.

Specific examples of the surfactant include an anionic surfactant, a cationic surfactant, an amphoteric surfactant, and a nonionic surfactant.
Specific examples of the anionic surfactant include, for example, alkyl ether sulfate, alkyl sulfate, alkenyl ether sulfate, alkenyl sulfate, olefin sulfonate, alkane sulfonate, saturated or unsaturated fatty acid salt, alkyl or alkenyl. Ether carboxylate, α-sulfone fatty acid salt, N-acyl amino acid type surfactant, phosphate mono- or diester type surfactant, and sulfosuccinate. Specific examples of the anion group counter ion of these surfactants include, for example, sodium ion, potassium ion, and triethanolamine. Specific examples of alkyl sulfates include, for example, sodium lauryl sulfate and triethanolamine lauryl sulfate. Specific examples of the alkyl ether sulfate include, for example, polyoxyethylene (hereinafter referred to as POE) sodium lauryl ether sulfate. Specific examples of the α-sulfone fatty acid salt include, for example, sodium stearoylmethyl taurine, triethanolamine dodecylbenzenesulfonate, and sodium tetradecenesulfonate. Specific examples of phosphoric acid mono- or diester surfactants include, for example, POE lauryl ether phosphate. Specific examples of the N-acyl amino acid type surfactant include, for example, N-lauroyl glutamates and N-lauroylmethyl-β-alanine salts.

  Specific examples of the cationic surfactant include, for example, lauryl trimethyl ammonium chloride, cetyl trimethyl ammonium chloride, stearyl trimethyl ammonium chloride, alkyl trimethyl ammonium chloride, distearyl dimethyl ammonium chloride, cetyl trimethyl ammonium bromide, stearyl trimethyl ammonium bromide, It includes ethyl lanolin sulfate fatty acid aminopropylethyldimethylammonium, stearyltrimethylammonium saccharin, cetyltrimethylammonium saccharin, and behenyltrimethylammonium methylsulfate.

  Specific examples of amphoteric surfactants include, for example, 2-undecyl-N-carboxymethyl-N-hydroxyethylimidazolinium betaine sodium, cocoamidopropyl betaine, and lauryldimethylaminoacetic acid betaine.

  Specific examples of the nonionic surfactant include, for example, an ether type nonionic surfactant and an ester type nonionic surfactant. Specific examples of the ether type nonionic surfactant include, for example, POE cetyl ether, POE stearyl ether, POE behenyl ether, POE oleyl ether, POE lauryl ether, POE octyl decyl ether, POE hexyl decyl ether, POE isostearyl ether, POE nonyl phenyl ether and POE octyl phenyl ether are included.

  Specific examples of the ester type nonionic surfactant include, for example, POE sorbitan monooleate, POE sorbitan monostearate, POE sorbitan monopalmitate, POE sorbitan monolaurate, POE sorbitan trioleate, POE glycerol monostearate, Monomyristic acid POE glycerin, Tetraoleic acid POE sorbit, Hexostearic acid POE sorbit, Monolauric acid POE sorbit, POE sorbit beeswax, Monooleic acid polyethylene glycol, Monostearic acid polyethylene glycol, Monolauric acid polyethylene glycol, Lipophilic monooleic acid Glycerol, lipophilic glyceryl monostearate, self-emulsifying glyceryl monostearate, sorbitan monooleate, sesquiole Sorbitan acid, sorbitan trioleate, sorbitan monostearate, sorbitan monopalmitate, sorbitan monolaurate, sucrose fatty acid ester, decaglyceryl monolaurate, decaglyceryl monostearate, decaglyceryl monooleate, and decaglyceryl monomyristate Contains glyceryl.

  Specific examples of sugar include sorbitol and maltose, for example. Specific examples of preservatives include, for example, parabens. Specific examples of stabilizers include, for example, phenacetin, 8-hydroxyquinoline, acetanilide, sodium pyrophosphate, barbituric acid, uric acid, and tannic acid. Specific examples of chelating agents include, for example, sodium ethylenediaminehydroxyethyl triacetate, edetic acid, disodium edetate, tetrasodium edetate, sodium citrate, sodium metaphosphate, sodium polyphosphate, and 1-hydroxyethylidene-1, 1-diphosphonic acid and its salts. Specific examples of the pH adjuster include, for example, 2-amino-2-methyl-1-propanol (AMP), triethanolamine (TEA), and arginine. Specific examples of the antioxidant include, for example, sulfite. Moreover, you may mix | blend as needed at least 1 type chosen from what is listed in the "quasi drug raw material specification" (June, 2006 issue, Yakuji Nippo).

  The hair dye composition is a dispersion system in which water is dispersed in the organic solvent, and is made into a gel by the action of the thickener. The hair dye composition is used as a hair manicure (semi-permanent hair dye). The method for applying the hair dye composition to the hair is not particularly limited, and a known method can be appropriately used. For example, a coating method using a comb or a brush, a coating method using a hand comb, and a coating method using a spray (spraying) can be used.

Next, the action of the hair dye composition will be described.
The hair dye composition prepared with the above-described composition is stored, for example, in a container until use. The hair dye composition is allowed to stand for a predetermined time after being applied to wet hair. Next, the hair is washed away with water or warm water, washed with shampoo and the like, and then dried. On the other hand, for example, the hair dye composition remaining in the container is stored until the next hair dyeing. When the hair dye composition is stored, the viscosity change of the hair dye composition is suppressed by containing the above thickener.

  The hair is dyed in a shade based on the direct dye by adsorption of the direct dye on its surface and penetration of the direct dye into the interior of the hair. At this time, since the hair dye composition contains a predetermined amount or less of water, background stains are suppressed. Here, although the hair dyeing power of the direct dye tends to decrease as the water content is reduced, the hair dye composition of the present embodiment contains the organic solvent, so that the dye of the direct dye is used. Hair strength is increased. Moreover, said thickener tends to be hard to inhibit the effect by reduction of water content, and the effect by the said organic solvent containing. Therefore, the effect of suppressing background stains and the hair dyeing power are easily exhibited.

  When the hair dye composition is applied to wet hair, the hair dyeing power is easily exhibited. The wet hair is not particularly limited as long as it is wet with water or warm water. For example, the hair is 10% to 90% by weight of the dry hair.

According to the embodiment described in detail above, the following effects are exhibited.
(1) The hair dye composition contains a direct dye, the organic solvent, and water, and the content of water in the hair dye composition is 1.0 to 20% by mass. The hair dye composition contains the specific thickener described above. For this reason, it becomes easy to improve the stability of the viscosity while suppressing the background dirt and maintaining the hair dyeing power. By increasing the stability of the viscosity, it is possible to provide a hair dye composition that suppresses variation in the applicability to hair according to the storage period.

(2) When the mass ratio of water to the organic solvent is in the range of 0.015 to 1.0, it becomes even easier to suppress background stains.
(3) It becomes easy to improve hair dyeing power because the mass ratio of the water with respect to a direct dye is the range of 5.0-5000.

(4) By containing the oligomer ester of carboxylic acid containing divalent carboxylic acid and polyglycerol as a thickener, it is easy to further improve the stability of the viscosity of the hair dye composition.
(5) By containing (behenic acid / eicosanedioic acid) polyglyceryl-10 as the above oligomer ester, it is easy to further improve the stability of the viscosity of the hair dye composition.

  (6) The direct dye preferably contains at least one selected from acidic dyes and cationic dyes. The configuration described in the above section (1) is particularly effective in that the hair dyeing power of such a direct dye is exhibited.

(7) By further containing an acrylic acid polymer, viscosity stability is easily obtained even when the hair dye composition is stored at a higher temperature.
(8) According to the hair dyeing method in which the hair dye composition is applied to wet hair, the hair dyeing power is easily exhibited.

In addition, the said embodiment can also be changed and comprised as follows.
The product form of the hair dye composition is hair nail polish, but may be a color treatment, for example. The color treatment is, for example, a gradual dyeing hair dye that is applied to the hair in daily hair care and is gradually dyed to a desired color as a result of repeated hair dyeing treatment.

  -Although the said hair dye composition is applied to wet hair, it can also be applied to dry hair. Even in this case, based on the above configuration, it is easy to improve the stability of the viscosity while suppressing the background stain and maintaining the hair coloring power.

Next, the embodiment will be specifically described with reference to examples and comparative examples.
<Preparation of hair dye composition>
Each hair dye composition having the compositions shown in Table 1 and Table 2 was prepared. In Tables 1 and 2, the unit of the numerical value representing the content of each component of the hair dye composition is% by mass. The hair dye composition of Comparative Example 5 is adjusted to have a pH of 3.5 when the 10% by mass aqueous solution is used. (A) to (E) written together with the component names in each table are (A) at least one organic solvent selected from direct dyes, (B) aromatic alcohols, and alkylene carbonates, (C) water, (D ) Thickeners and (E) components corresponding to acrylic polymers.

About the hair dye composition of each example, it evaluated about the hair dyeing effect, the background stain | pollution | contamination inhibitory effect, and viscosity stability. The evaluation method will be described below.
<Evaluation of hair dyeing power>
The hair dye composition was applied to a human hair bundle containing white hair using a brush. The human hair bundle was allowed to stand at 30 ° C. for 20 minutes, washed with a normal shampoo, and then dried to give a dyeing treatment. The “applied hair” column of “hair dyeing power” in Tables 1 and 2 shows the state of human hair bundles to which the hair dye composition is applied. In the “applied hair” column, an example described as “Wet” indicates that the hair dye composition was applied to a human hair bundle wet with water, and an example described as “Dry” represents a dried state. It is shown that the hair dye composition was applied to the human hair bundle.

  The human hair bundle after the hair dyeing treatment was visually observed by 10 panelists to determine whether the hair dyeing composition of each example had good hair dyeing power. When the number of panelists responding that hair dyeing power is good is 8 or more, it is “5”, when it is 6-7, it is “4”, when it is 4-5 The evaluation was made on a five-point scale, with “3”, “2” for 2 to 3 people and “1” for 1 or less. The evaluation results are shown in the “Evaluation” column of “Hair dyeing power” in Tables 1 and 2.

<Evaluation of background stain suppression>
0.1 g of the hair dye composition of each example was applied to the inner side of the arm in a circular shape with a diameter of 1 cm, allowed to stand for 5 minutes, and then washed with water. 10 panelists visually observed the arm inner part at this time, and it was judged whether the background was hard to get dirty about the hair dye composition of each example. When the number of panelists responding that it is recognized that the background is difficult to get dirty is “5”, when it is 6-7, it is “4”, when it is 4-5 The evaluation was made on a five-point scale, with “3”, “2” for 2 to 3 people and “1” for 1 or less. The evaluation results are shown in the column “Evaluation of Soil Stain Suppression” in Tables 1 and 2.

<Evaluation of viscosity stability>
The hair dye composition of each example was placed in a constant temperature bath at 60 ° C. and stored for 1 week. The viscosity of the hair dye composition after storage for 1 week was measured with a B-type viscometer using a rotor No. 3. Measurement was performed under the conditions of 12 rpm, 25 ° C. and 1 minute. The viscosity ratio (viscosity ratio = viscosity immediately after preparation / viscosity after storage for 1 week) was calculated from the viscosity measured under the same conditions for the hair dye composition immediately after preparation and the viscosity of the hair dye composition after storage for 1 week. The viscosity ratio closer to 1 indicates that the viscosity stability during storage is more excellent. “5” when the viscosity ratio is 0.80 or more and less than 1.20, and “4” when the viscosity ratio is 0.60 or more and less than 0.80 or 1.2 or more and less than 2.0. When the viscosity ratio is 0.40 or more and less than 0.60 or 2.0 or more and less than 4.0, “3”, and the viscosity ratio is 0.20 or more and less than 0.40 or 4.0 or more and 6.0. When the viscosity ratio was less than “2”, the viscosity ratio was less than 0.20, or when the viscosity ratio was 6.0 or more, the rating was “1”. The evaluation results are shown in the column “Evaluation of viscosity stability” in Tables 1 and 2.

As shown in Table 1, in each example, a result of “3” or more was obtained for each evaluation. Comparative Example 1 differs from Example 4 in that (D) a thickener is not contained. In Comparative Example 1, the viscosity stability is inferior to that in Example 4. In Comparative Example 2, since at least one organic solvent selected from (B) aromatic alcohol and alkylene carbonate is not contained, the hair dyeing power is inferior to each example. In Comparative Example 3, since the content of (C) water exceeds 20% by mass, background stains are less likely to be suppressed than in each Example. In Comparative Example 4, since the content of (C) water is less than 1% by mass, the hair dyeing power is inferior to each example. In Comparative Example 5, since the content of (C) water exceeds 20% by mass, the background dirt is more difficult to be suppressed than in each example. In Comparative Example 5, hydroxyethyl cellulose, which is expected to have an effect of stabilizing the viscosity, was contained, but the viscosity stability was inferior to each example. In Comparative Example 6, since (C) water was not contained, the hair dyeing power was inferior to that of Comparative Example 4.

Claims (7)

(A) Direct dye, (B) At least one organic solvent selected from aromatic alcohol and alkylene carbonate, and (C) water, and (C) water content is 1.0 to 20% by mass A hair dye composition comprising:
As (D) a thickening agent, hair dye composition characterized by containing the oligomer ester le of carboxylic acids with polyglycerol containing divalent carboxylic acids.   2. The mass ratio of (C) water to at least one organic solvent selected from (B) aromatic alcohol and alkylene carbonate is in the range of 0.015 to 1.0. Hair dye composition.   The hair dye composition according to claim 1 or 2, wherein a mass ratio of the (C) water to the (A) direct dye is in the range of 5.0 to 5,000. As oligomeric esters of carboxylic acids and polyglycerol containing the divalent carboxylic acid, according to any one of claims 1 to 3, characterized in that it comprises a (behenate / eicosadioate) polyglyceryl-10 Hair dye composition. The hair dye composition according to any one of claims 1 to 4 , wherein the direct dye (A) includes at least one selected from an acid dye and a cationic dye. (E) The hair dye composition according to any one of claims 1 to 5 , further comprising an acrylic acid polymer. It is a hair dyeing method using the hair dye composition as described in any one of Claims 1-6 , Comprising: The said hair dye composition is applied to wet hair, The hair dyeing method characterized by the above-mentioned.