JP6615547B2 - First agent for oxidative hair dyeing - Google Patents

Description

  The present invention relates to a first agent for oxidation hair dye, and an oxidation hair dye kit and a hair dyeing method using the same.

  At present, hair coloring is widely used, and hair coloring agents based on various principles corresponding to the purpose and the like are commercially available. Among these, oxidative hair dyes are widely used because they have good dyeability and high sustainability.

  An oxidative hair dye is composed of a first agent containing an oxidative dye and an alkali agent and a second agent containing an oxidant, and is used by mixing them during use. When this is applied to the hair, the alkaline agent expands the hair and increases the permeability of the oxidation dye, and reacts with the oxidation agent (usually hydrogen peroxide) to develop the color of the oxidation dye and melanin in the hair. The hair is dyed.

  However, hair dyeing with an oxidative hair dye generally causes rough hair cuticles, thereby deteriorating the feel (combination) of the hair. In particular, when the target of hair coloring is white hair, the difference between the newly-extended white portion and the dyed black portion is conspicuous, and this problem becomes even more pronounced because it is necessary to dye hair frequently. .

  In general, gray hair has a hydrophobic property, and therefore, it is said that oxidative dyes do not easily penetrate and are difficult to dye.

  In order to solve these problems, Patent Document 1 proposes a first agent for oxidative hair coloring in which a specific surfactant and a specific ester are combined.

JP 2009-161492 A

  According to the present invention, even white hair can be dyed darker (that is, so that the L value of the color difference becomes lower), and adversely affects the feel of the hair (for example, roughening of the cuticle and further progress thereof) It is an object of the present invention to provide a first agent for oxidative hair dyeing in which cuticle peeling and the like are further reduced.

  As a result of diligent research, the inventors of the present invention include a first agent for oxidative hair dyeing containing a surfactant, a diester of an aliphatic alcohol having 8 to 30 carbon atoms, and a specific fatty acid ester in combination. Thus, it has been found that the above problems can be solved. The present invention has been completed as a result of further research based on this finding. That is, the present invention includes the following aspects.

Item 1. (A) a surfactant; (B) a diester of an aliphatic alcohol having 8 to 30 carbon atoms; (C) at least one selected from the group consisting of isodecyl pivalate, isopropyl palmitate, and octyldodecyl myristate 1st agent for oxidative hair dye containing the fatty acid ester of seed | species.
Item 2. Item 1. The first agent for oxidative hair dyeing according to Item 1, wherein the aliphatic alcohol has 14 to 18 carbon atoms.
Item 3. Item 1. The first agent for oxidative hair dyeing according to Item 1 or 2, wherein the content of the phosphoric diester (B) is 0.01 to 5% by mass with respect to 100% by mass of the first agent for oxidative hair dyeing. .
Item 4. Item 1. The first agent for oxidative hair dyeing according to any one of Items 1 to 3, wherein the fatty acid ester (C) is isodecyl pivalate.
Item 5. Item 5. The oxidative hair dyeing item according to any one of Items 1 to 4, wherein the surfactant (A) is at least one selected from the group consisting of a nonionic surfactant and a cationic surfactant. 1 agent.
Item 6. Item 5. The first agent for oxidative hair dyeing according to any one of Items 1 to 5, wherein the surfactant (A) is a nonionic surfactant and a cationic surfactant.
Item 7. Item 1. The first agent for oxidative hair dyeing according to any one of Items 1 to 6, which is for white hair dyeing.
Item 8. Item 8. An oxidation hair dye kit comprising the first agent for oxidation hair dyeing according to any one of Items 1 to 7 and the second agent for oxidation hair dyeing.
Item 9. Item 8. A hair dyeing method comprising applying the first agent for oxidative hair dyeing and the second agent for oxidative hair dyeing according to any one of Items 1 to 7 to hair.

  By using the first agent for oxidative hair dyeing of the present invention, even white hair can be dyed darker (that is, so that the L value of the color difference becomes lower) and adversely affects the feel of the hair (for example, It is possible to further reduce the roughness of the cuticle and peeling of the cuticle due to further progress.

  In the present invention, the “first agent for oxidative hair dye” includes a first agent containing an oxidative dye and an alkaline agent, and a second agent containing an oxidant, and the first agent and the second agent at the time of use. This refers to the first agent in the oxidative hair dye kit used in combination.

1. First agent for oxidative hair dye The present invention is (A) a surfactant; (B) a phosphoric acid diester of an aliphatic alcohol having 8 to 30 carbon atoms (in this specification, simply referred to as “phosphoric acid diester”). (C) at least one fatty acid ester selected from the group consisting of isodecyl pivalate, isopropyl palmitate, and octyldodecyl myristate (in this specification, simply referred to as “fatty acid ester”) A first agent for oxidative hair dye (which may be referred to as “the first agent for oxidative hair dye of the present invention” in the present specification). This will be described below.

  The surfactant (A) is not particularly limited as long as it is a surfactant that can be employed in the first agent for oxidative hair dyeing, and a wide variety of known ones can be employed. Examples of the surfactant (A) include nonionic surfactants, cationic surfactants, anionic surfactants, and amphoteric surfactants. Among these, nonionic surfactants, cationic surfactants, and the like are preferable, and nonionic surfactants are more preferable from the viewpoint that dark hair can be dyed darker. Further, from the viewpoint that the adverse effect on the feel of hair can be further reduced, cationic surfactants, nonionic surfactants and the like are preferable, and cationic surfactants are more preferable. Therefore, it is preferable to use a combination of a nonionic surfactant and a cationic surfactant from the viewpoint that dark hair can be dyed darker and the adverse effect on the feel of the hair can be further reduced. . In addition, from the viewpoint that the effects of the present invention can be more effectively exhibited, the first agent for oxidative hair dyeing of the present invention includes, as a surfactant, a nonionic surfactant, a cationic surfactant, and an anionic property. It is preferable to include only at least one selected from the group consisting of surfactants, and it is more preferable to include only at least one selected from the group consisting of nonionic surfactants and cationic surfactants. More preferably, it contains only a nonionic surfactant and a cationic surfactant.

  Nonionic surfactants include, for example, hydrophilic polyoxyethylene alkyl ethers [POE (21) lauryl ether, POE (7) cetyl ether, POE (10) cetyl ether, POE (15) cetyl ether, POE ( 20) Cetyl ether, POE (23) cetyl ether, POE (25) cetyl ether, POE (30) cetyl ether, POE (40) cetyl ether, POE (20) stearyl ether, POE (7) oleyl ether, POE (10 ) Oleyl ether, POE (15) oleyl ether, POE (10) behenyl ether, POE (20) behenyl ether, POE (30) behenyl ether], propylene glycol fatty acid ester (such as propylene glycol monostearate), glycerin Fatty acid esters (glyceryl myristate, glyceryl monostearate, glyceryl monoisostearate, glyceryl monooleate, glyceryl dioleate, glyceryl distearate), lipophilic polyglyceryl fatty acid esters (glyceryl monostearate, diglyceryl monooleate) , Polyglyceryl dioleate, diglyceryl monoisostearate, tetraglyceryl monostearate, tetraglyceryl tristearate), sorbitan fatty acid esters (sorbitan monolaurate, sorbitan monopalmitate, sorbitan monostearate, sorbitan tristearate, etc.), Lipophilic polyoxyethylene castor oil [POE (10) castor oil, POE (10) hydrogenated castor oil, etc.], lipophilic polyoxy Ethylene alkyl ether [POE (2) cetyl ether, POE (2) stearyl ether, POE (4) stearyl ether, POE (2) oleyl ether, POE (5) behenyl ether], lipophilic polyethylene glycol fatty acid ester [monostearin Polyethylene glycol (2EO), polyethylene glycol monostearate (4EO), polyethylene glycol monooleate (2EO), polyethylene glycol monooleate (6EO), diethylene glycol stearate, etc. And other lipophilic nonionic surfactants; hydrophilic polyglycerin fatty acid esters (hexaglyceryl monolaurate, hexaglyceryl monomyristate, hexaglyceryl monostearate, monooleic acid Xaglyceryl, decaglyceryl monolaurate, decaglyceryl monomyristate, decaglyceryl monoisostearate, decaglyceryl monooleate, decaglyceryl monolinoleate, decaglyceryl distearate, decaglyceryl diisostearate), polyoxyethylene glyceryl fatty acid ester [Monostearic acid POE (15) glyceryl, monooleic acid POE (15) glyceryl, etc.], polyoxyethylene sorbitan fatty acid ester [mono coconut oil fatty acid POE (20) sorbitan, monopalmitic acid POE (20) sorbitan, monostearic acid POE (20) sorbitan, monoisostearic acid POE (20) sorbitan, monooleic acid POE (20) sorbitan, etc.], polyoxyethylene sorbit Fatty acid esters [monolauric acid POE (6) sorbite, hexastearic acid POE (6) sorbite, tetrastearic acid POE (60) sorbite, tetraoleic acid POE (6) sorbite, tetraoleic acid POE (30) sorbite, etc.), Polyoxyethylene lanolin [POE lanolin, POE (5) lanolin alcohol, POE (10) lanolin alcohol, POE (20) lanolin alcohol, POE (40) lanolin alcohol], hydrophilic polyoxyethylene castor oil [POE (20) Castor oil, POE (20) hydrogenated castor oil, POE (30) hydrogenated castor oil, etc.], polyoxyethylene sterol [POE (10) phytosterol, POE (20) phytosterol, POE (30) phytosterol, etc.], poly Alkoxy polyoxypropylene alkyl ether [POE (20) POP (4) cetyl ether, hydrophilic polyethylene glycol fatty acid esters [polyethylene glycol monolaurate of (10E. O. ), Polyethylene glycol monostearate (10E.O.), polyethylene glycol monostearate (25E.O.), polyethylene glycol monostearate (40E.O.), polyethylene glycol monostearate (45E.O.), And hydrophilic nonionic surfactants such as polyethylene glycol monostearate (55EO) and polyethylene glycol monooleate (10EO). In each of the above nonionic surfactants, “POE” means polyoxyethylene, and the numerical value in parentheses after that means the number of moles of ethylene oxide added. In addition, “nEO” means that the value of n means the number of moles of ethylene oxide added. Among these, hydrophilic polyoxyethylene alkyl ether is preferable from the viewpoint that dark hair can be dyed more strongly, and hydrophilic polyoxyethylene alkyl (added mole number of ethylene oxide: 10 to 40, preferably 15-35, more preferably 20-30) alkyl (carbon atoms: 10-25, preferably 12-20, more preferably 14-18) ether is more preferred.

  Examples of the cationic surfactant include alkyl quaternary ammonium salts [lauryl trimethyl ammonium chloride, lauryl trimethyl ammonium bromide, alkyl trimethyl ammonium chloride, cetyl trimethyl ammonium chloride, cetyl trimethyl ammonium bromide, stearyl trimethyl ammonium chloride, bromide Stearyltrimethylammonium chloride, dicetyldimethylammonium chloride, dicocoyldimethylammonium chloride, distearyldimethylammonium chloride, benzalkonium chloride, myristyldimethylbenzylammonium chloride, stearyldimethylbenzylammonium chloride, etc.], fatty acid amidoamine salts (diethylaminoethylamide stearate) , Stearic acid dimethylaminopropylamide, etc.)Among these, from the viewpoint that the adverse effect on hair feel can be further reduced, alkyl quaternary ammonium salts are preferable, alkyltrimethylammonium chloride is more preferable, and alkyl chloride (carbon atoms: 15 to 30, preferably 18 to 26, more preferably 20-24) trimethylammonium is more preferred.

  Examples of the anionic surfactant include fatty acid salts (such as coconut oil fatty acid, lauric acid, myristic acid, palmitic acid, stearic acid, potassium salt of oleic acid, sodium salt, isopropanolamine salt, etc.), alkyl ether carboxyl Acid salts (polyoxyethylene lauryl ether acetic acid, polyoxyethylene lauryl ether potassium acetate, sodium lauryl ether acetate, etc.), acyl lactates (stearoyl sodium lactate, isostearoyl sodium lactate, etc.), N-acyl sarcosine salts (coconut oil fatty acid sarcosine) , Coconut oil fatty acid sarcosine sodium, lauroyl sarcosine, lauroyl sarcosine sodium, etc.), N-acyl glutamate (coconut oil fatty acid acyl potassium potassium glutamate, coconut oil fatty acid acyl glutami) Sodium sulfate, lauroyl glutamate, potassium lauroyl glutamate, sodium lauroyl glutamate, lauroyl glutamate, sodium lauroyl glutamate, potassium lauroyl glutamate, stearoyl glutamate, sodium stearoyl glutamate, potassium stearoyl glutamate, N-acyl-L-glutamate sodium, N-lauroyl L -Sodium glutamate), N-acylmethylalanine salt (coconut oil fatty acid methylalanine, coconut oil fatty acid methylalanine sodium, lauroylmethylalanine, lauroylmethylalanine sodium, myristoylmethylalanine, myristoylmethylalanine sodium, etc.), N-acylmethyl Taurine salt (coconut oil fatty acid methyl taurine Um, coconut oil fatty acid methyl taurine sodium, coconut oil fatty acid methyl taurine potassium magnesium, lauroyl methyl taurine sodium, myristoyl methyl taurine sodium, etc., alkane sulfonates (such as sodium alkane sulfonate), alkyl sulfosuccinates [disulfo succinate ( 2-ethylhexyl) sodium, disodium lauryl sulfosuccinate, etc.], acyl isethionate (eg, palm oil fatty acid ethyl ester sodium sulfonate), alkyl sulfate ester salt (sodium alkyl sulfate, sodium lauryl sulfate, potassium lauryl sulfate, magnesium lauryl sulfate, etc.) ), Alkyl ether sulfate ester salt (sodium polyoxyethylene alkyl ether sulfate, polyoxyethylene lauryl ester) -Sodium sulfate, etc.), monoalkyl phosphate esters (lauryl phosphate, sodium lauryl phosphate, etc.), polyoxyethylene alkyl ether phosphates (polyoxyethylene lauryl ether phosphate, polyoxyethylene lauryl ether phosphate sodium) , Polyoxyethylene cetyl ether phosphate, sodium polyoxyethylene cetyl ether phosphate, polyoxyethylene stearyl ether phosphate, sodium polyoxyethylene stearyl ether phosphate, polyoxyethylene oleyl ether phosphate, polyoxyethylene oleyl ether phosphate Sodium etc.). Among these, sodium polyoxyethylene alkyl ether sulfate is preferable, and polyoxyethylene (added mole number of ethylene oxide: 2-6, preferably 2-4) alkyl (carbon atom number: 5-20, preferably 8-16). 10-14) Sodium ether sulfate is more preferable.

  Examples of amphoteric surfactants include amino acid type amphoteric surfactants and betaine type amphoteric surfactants. Specific examples of the amino acid type amphoteric surfactant include, for example, 2-alkyl-N-carboxymethyl-N-hydroxyethylimidazolinium betaine, undecylhydroxyethylimidazolinium betaine sodium, alkyldiaminoethylglycine hydrochloride, N- Coconut oil fatty acid acyl-N′-carboxyethyl-N′-hydroxyethylethylenediamine sodium, N-coconut oil fatty acid acyl-N′-carboxyethoxyethyl-N′-carboxyethylethylenediamine disodium, N-coconut oil fatty acid acyl-N Glycine-type amphoteric surfactants such as disodium '-carboxymethoxyethyl-N'-carboxymethylethylenediamine and sodium lauryldiaminoethylglycine; sodium laurylaminopropionate, laurylamino Amino acid type amphoteric surfactants such as sodium dipropionate; and the like. Specific examples of the betaine-type amphoteric surfactant include, for example, coconut oil alkyl betaine, lauryl dimethylaminoacetic acid betaine, stearyl dimethylaminoacetic acid betaine, sodium stearyldimethylbetaine, coconut oil fatty acid amidopropyl betaine, and palm oil fatty acid amidopropyl. Examples thereof include aminoacetic acid betaine type amphoteric surfactants such as betaine and amidopropyl betaine laurate; sulfobetaine type amphoteric surfactants such as lauryl hydroxysulfobetaine; and the like.

  The surfactant (A) may be a single type or a combination of two or more types.

  The content of the surfactant (A) is, for example, 0.1 to 10% by mass with respect to 100% by mass of the first agent for oxidative hair dyeing, preferably from the viewpoint that the effects of the present invention can be more reliably exhibited. It is 0.5-8 mass%, More preferably, it is 2-8 mass%, More preferably, it is 4-7 mass%. As a more specific aspect, the content of the nonionic surfactant is, for example, 2 to 10% by mass, preferably 3 to 8% by mass, more preferably 100% by mass of the first agent for oxidative hair dyeing. The content of the cationic surfactant is, for example, 0.1 to 3% by mass, preferably 0.3 to 2% by mass with respect to 100% by mass of the first agent for oxidative hair dyeing. More preferably, the content of the anionic surfactant is, for example, 0.5 to 5% by mass with respect to 100% by mass of the first agent for oxidative hair dyeing, preferably Is 1 to 4 mass%, more preferably 1.5 to 3 mass%.

  The phosphoric acid diester (B) is not particularly limited as long as it is a diester of two molecules of an aliphatic alcohol having 8 to 30 carbon atoms and phosphoric acid.

  The number of carbon atoms of the aliphatic alcohol is preferably 10 to 25, more preferably 12 to 22, from the viewpoint that dark hair can be dyed darker and the adverse effect on hair feel can be further reduced. More preferably, it is 14-20, More preferably, it is 14-18.

  The aliphatic alcohol may be linear or branched, but is preferably straight from the viewpoint that it can be dyed darker even with white hair and can further reduce the adverse effects on the feel of the hair. It is a chain.

  The fatty alcohol may be a saturated fatty alcohol or an unsaturated fatty alcohol, but it can be dyed darker even with white hair, and from the viewpoint that the adverse effect on the feel of the hair can be further reduced, Saturated fatty alcohol is preferred.

  Specific examples of the aliphatic alcohol include lauryl alcohol, myristyl alcohol, cetyl alcohol, stearyl alcohol, oleyl alcohol, and linoleyl alcohol.

  The phosphoric acid diester (B) may be a single type or a combination of two or more types.

  The content of the phosphoric acid diester (B) is not particularly limited. However, from the viewpoint that dark hair can be dyed darker and adverse effects on hair feel can be further reduced. For example, 0.001 to 10% by mass, preferably 0.01 to 5% by mass, more preferably 0.01 to 3% by mass, and further preferably 0.05 to 1% with respect to 100% by mass of the first hair agent. It is 0.1 mass%, More preferably, it is 0.1-0.5 mass%, Most preferably, it is 0.15-0.3 mass%.

  The fatty acid ester (C) is not particularly limited as long as it is at least one fatty acid ester selected from the group consisting of isodecyl pivalate (isodecyl neopentanoate), isopropyl palmitate, and octyldodecyl myristate.

  The fatty acid ester (C) is preferably isodecyl pivalate or octyldodecyl myristate from the viewpoint that dark hair can be dyed darker and adverse effects on the hair feel can be further reduced. Is more preferable.

  1 type of fatty acid ester (C) may be sufficient, and 2 or more types of combinations may be sufficient as it.

  The content of the fatty acid ester (C) is, for example, 0.1 to 8% by mass, preferably 0 with respect to 100% by mass of the first agent for oxidative hair dye, from the viewpoint that the effects of the present invention can be more reliably exhibited. 0.5 to 5% by mass, more preferably 1 to 3% by mass, and still more preferably 1.5 to 3% by mass.

  From the viewpoint that the effects of the present invention can be exhibited more effectively, the first agent for oxidative hair dyeing of the present invention preferably contains only the phosphoric acid diester (B) and the fatty acid ester (C) as an ester. .

  In addition to the surfactant (A), phosphoric diester (B), and fatty acid ester (C), the first agent for oxidation hair of the present invention is usually an oxidation dye (D) and an alkali agent (E ).

  Examples of the oxidation dye (D) include a dye intermediate that develops color by polymerization alone, or a combination of the coupler and a dye intermediate that develops color after polymerization. The dye intermediate is not particularly limited as long as it can be blended with the first agent for oxidative hair dyeing. For example, toluene-2,5-diamine hydrochloride, paraphenylenediamine hydrochloride, orthoaminophenol, p-phenylene Diamine, toluene-2,5-diamine, toluene-3,4-diamine, o-aminophenol, p-aminophenol, p-methylaminophenol, orthoaminophenol sulfate, orthochloroparaphenylenediamine sulfate, sulfuric acid 4,4 Examples include '-diaminodiphenylamine, toluene-2,5-diamine sulfate, paraaminophenol sulfate, paraphenylenediamine sulfate, and paramethylaminophenol sulfate.

  Moreover, as a coupler combined with a dye intermediate as needed, for example, 2,4-diaminophenoxyethanol hydrochloride, m-phenylenediamine, 2,6-diaminopyridine, 5-aminoorthocresol, m-aminophenol, α -Naphthol, hydroquinone, resorcin, catechol, 3,3'-iminodiphenol, 2,4-diaminophenol hydrochloride, metaphenylenediamine hydrochloride, 1,5-dihydroxynaphthalene, 5- (2-hydroxyethylamino) -2- Examples thereof include methylphenol, 5-aminoorthocresol sulfate, 2,4-diaminophenol sulfate, metaaminophanol sulfate, and metaphenylenediamine sulfate.

  The content of the oxidation dye (D) can be appropriately selected according to the desired color tone. The content is, for example, 0.01 to 5% by mass, preferably 0.02 to 3% by mass, and more preferably 0.05 to 2% by mass with respect to 100% by mass of the first agent for oxidative hair dyeing. .

  The alkaline agent (E) is not particularly limited as long as it can be blended with the first agent for oxidative hair dyeing. For example, ammonia water (for example, concentration 25 to 28%), monoethanolamine, triethanolamine , Potassium hydroxide, sodium hydroxide and the like.

  The content of the alkaline agent (E) is not particularly limited as long as it is a content that can expand hair, increase the permeability of the dye, and further promote the decomposition of hydrogen peroxide. In the case of using ammonia water having a concentration of 25% as the alkaline agent (E), the content is, for example, 0.01 to 20% by mass, preferably 0 with respect to 100% by mass of the first agent for oxidative hair dyeing. 0.1 to 15% by mass, more preferably 1 to 10% by mass, and more preferably 3 to 8% by mass.

  The dosage form of the first agent for oxidative hair dyeing of the present invention is not particularly limited, and various known dosage forms such as cream, transparent gel, translucent gel, emulsion, liquid, foam, etc. A dosage form can be employed.

  The pH of the first agent for oxidative hair dyeing of the present invention is usually adjusted to pH 6-11.

  In addition to the above-described components, the first agent for oxidative hair dyeing of the present invention may be an oily component other than the solvent, the phosphoric diester (B) and the fatty acid ester (C), or a direct dye, depending on the dosage form. , Oxidation dye stabilizers, emulsified stabilizers, pH adjusters, animal and plant extracts, water-soluble polymers, amino acids and their derivatives, proteins and their derivatives, vitamins, UV protection agents, antioxidants, metal ions Known components that can be blended in the first agent for oxidative hair dye, such as a sequestering agent and a fragrance, can be included. Among these, from the viewpoint that the effects of the present invention can be more reliably exhibited, the first agent for oxidative hair dyeing of the present invention further includes an oil component other than the phosphoric acid diester (B) and the fatty acid ester (C). It is preferable.

  The solvent is not particularly limited, but is usually water. The content of the solvent is, for example, 20 to 90% by mass with respect to 100% by mass of the first agent for oxidative hair dyeing.

  The oil component is not particularly limited, and examples thereof include vegetable oils, animal oils, waxes, petroleum hydrocarbons, higher fatty acids, higher alcohols, and silicones. Among these, higher alcohols are preferable from the viewpoint that the effects of the present invention can be more reliably exhibited.

  Examples of vegetable oils include avocado oil, almond oil, olive oil, sesame oil, rice bran oil, safflower oil, soybean oil, corn oil, rapeseed oil, palm oil, castor oil, grape seed oil, coconut oil, and hardened oil. It is done.

  Examples of animal oils include emu oil, horse oil, mink oil, and the like. Examples of the wax include jojoba oil, carnauba wax, candelilla wax, rice bran wax, lanolin, shellac and the like.

  Examples of petroleum hydrocarbons include light isoparaffin, light liquid isoparaffin, squalane, paraffin, liquid paraffin, liquid isoparaffin, petrolatum, microcrystalline wax, and the like.

  Examples of the higher fatty acid include lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid, oleic acid, isostearic acid, 12-hydroxystearic acid, and undecylenic acid.

  Examples of the higher alcohol include alcohols having 10 to 25 carbon atoms such as lauryl alcohol, myristyl alcohol, cetanol, stearyl alcohol, oleyl alcohol, behenyl alcohol, and cetostearyl alcohol.

  Examples of silicone include dimethyl silicone, cyclic silicone, polyether-modified silicone, amino-modified silicone, polyglycerin-modified silicone, and methylphenyl silicone.

  The content of the oil component is not particularly limited and can be appropriately adjusted. From the viewpoint that the effects of the present invention can be more reliably exhibited, the content of the oil component is, for example, 2 to 30% by mass, preferably 5 to 20% by mass, with respect to 100% by mass of the first agent for oxidative hair dyeing. More preferably, it is 7-15 mass%.

  The direct dye is not particularly limited, and examples thereof include 2-amino-4-nitrophenol, 2-amino-5-nitrophenol, nitroparaphenylenediamine hydrochloride, paranitroorthophenylenediamine, picramic acid, sodium picramate, Examples include 2-amino-5-nitrophenol sulfate, nitroparaphenylenediamine sulfate, paranitroorthophenylenediamine sulfate, and paranitrometaphenylenediamine sulfate.

  The stabilizer is not particularly limited, and examples thereof include ascorbic acids, thioglycolic acids, cysteines, mercapto compounds, sulfites, bisulfites, and thiosulfates.

  The pH adjuster is not particularly limited, and examples thereof include acids such as citric acid, phosphoric acid, malic acid, tartaric acid, and lactic acid; salts such as Na citrate and 2Na phosphate.

  The first agent for oxidative hair dyeing according to the present invention is particularly suitable for dyeing gray hair because it can darken even white hair and can further reduce the adverse effect on the feel of hair.

2. Oxidative hair dye kit The present invention comprises an oxidation hair dye kit comprising the first agent for oxidative hair dyeing and the second agent for oxidative hair dyeing (referred to herein as “the oxidative hair dye of the present invention”). Kit ”may also be indicated.).

  There is no particular limitation on the second agent for oxidative hair, which is a target to be combined with the first agent for oxidative hair of the present invention, and it is possible to employ a second agent for oxidative hair in which known components are appropriately blended. it can.

  The second agent for oxidative hair dye usually contains an oxidant, an oil component, a surfactant, an oxidant stabilizer, a solvent, and the like.

  Examples of the oxidizing agent include hydrogen peroxide, urea peroxide, melamine peroxide, sodium percarbonate, potassium percarbonate, sodium perborate, potassium perborate, ammonium persulfate, sodium peroxide, potassium peroxide, and peroxide. Examples thereof include magnesium, barium peroxide, calcium peroxide, strontium peroxide, a hydrogen peroxide adduct of sulfate, a hydrogen peroxide adduct of phosphate, and a hydrogen peroxide adduct of pyrophosphate. These oxidizing agents may be blended singly or in combination of two or more. Among these oxidizing agents, hydrogen peroxide is preferable because it has excellent bleaching power for hair.

  As other components such as an oily component, a surfactant, an oxidizing agent stabilizer, and a solvent, those exemplified above in “1. First agent for oxidative hair dyeing” or known components can be employed. .

  In the oxidative hair dye kit of the present invention, the first agent for oxidative hair dye and the second agent for oxidative hair dye of the present invention are housed in separate containers.

3. Hair dyeing method The present invention relates to a hair dyeing method (herein referred to as “the hair dye of the present invention” comprising applying the first agent for oxidizing hair and the second agent for oxidizing hair of the present invention to hair. It may be indicated as “method”).

  The mode of application is not particularly limited as long as the first agent for oxidative hair dyeing and the second agent for oxidative hair dyeing of the present invention are in a mixed state on the hair. For example, an aspect in which the first agent for oxidative hair coloring and the second agent for oxidative hair coloring of the present invention are mixed and then applied to the hair, or the first agent for oxidative hair coloring of the present invention is applied to the hair, and then The mode which applies the 2nd agent for oxidative hair dyeing to hair is mentioned.

  The mixing ratio of the first agent composition for hair dyeing and the second agent composition for hair dyeing may be adjusted according to the desired brightness and color. For example, the mass ratio is 1: 1 to 1:10. Can be about.

  After the application, it is usually left for a certain time (for example, 15 to 60 minutes) so that the reaction necessary for oxidative hair dyeing occurs sufficiently. Then, it is desirable to wash away excess components by washing with shampoo or the like and dry.

  EXAMPLES The present invention will be described in detail below based on examples, but the present invention is not limited to these examples.

(1) Preparation of first agent for oxidative hair dyeing First agent for oxidative hair dyeing was prepared according to the formulation shown in Tables 1 to 3 described later. The preparation procedure of Example 1 is as follows. First, alkyltrimethylammonium chloride was added to purified water, dissolved by heating with stirring, and then paraphenylenediamine, resorcin, and sodium ascorbate were added and maintained at 80 ° C. (this is used as an aqueous phase solution). On the other hand, POE (25) cetyl ether, dicetyl phosphate, isodecyl pivalate, and cetanol were mixed, heated and dissolved with stirring, and maintained at 80 ° C. (this was used as an oil phase solution). Next, the oil phase solution was added while stirring the aqueous phase solution. After adding the oil phase solution, it was naturally cooled with stirring, and when it was cooled to 35 ° C., aqueous ammonia (25% aqueous solution) was added. Further, the mixture was naturally cooled with stirring, the stirring was stopped when it was cooled to room temperature, and the obtained composition was used as each example of the first agent for oxidative hair dyeing. Other examples were also prepared in a similar manner. In Tables 1 to 3, the numerical values regarding the components indicate the mass% of the components with respect to 100 mass% of the first agent for oxidative hair dyeing, and the “total 100” means the total of each component other than purified water. It shows that the amount of purified water was added to the amount to reach 100% by mass.

(2) Preparation of Second Agent for Oxidative Hair A second agent for oxidative hair was prepared according to the formulation shown in Table 4 described later. The preparation procedure is as follows. First, alkyltrimethylammonium chloride was added to purified water, heated and dissolved with stirring, and maintained at 80 ° C. (this was used as an aqueous phase solution). On the other hand, cetostearyl alcohol, POE (25) cetyl ether, and liquid paraffin were mixed, heated and dissolved with stirring, and maintained at 80 ° C. (this was used as an oil phase solution). Next, the oil phase solution was added while stirring the aqueous phase solution. After adding the oil phase solution, the mixture was naturally cooled with stirring, and when it was cooled to 40 ° C., a hydroxyethane diphosphonic acid solution (60% aqueous solution) and a hydrogen peroxide solution (35% aqueous solution) were added. Further, the mixture was naturally cooled with stirring, and the stirring was stopped when it was cooled to room temperature, and the resulting composition was used as a production example of the second agent for oxidative hair dyeing. In Table 4, the numerical value regarding the component indicates the mass% of the component with respect to 100 mass% of the second agent for oxidative hair dyeing, and “total 100” means the total amount of each component other than purified water. The amount of purified water was added to reach 100% by mass.

(3) Preparation of shampoo composition A shampoo composition was prepared according to the formulation shown in Table 5 below. The preparation procedure is as follows. First, polyoxyethylene alkyl (12,13) ether sulfate sodium (3EO), coconut oil fatty acid amide propyl betaine solution, and cocamidomethyl MEA are added to purified water, dissolved by heating and kept at 80 ° C. did. The mixture was naturally cooled with stirring, and when cooled to 40 ° C., citric acid and methylisothiazolinone were added. Further, the mixture was naturally cooled with stirring, and when it was cooled to room temperature, stirring was stopped, and the resulting composition was used as a production example of a shampoo composition. In Table 5, the numerical value regarding the component indicates the mass% of the component with respect to 100 mass% of the shampoo composition, and “set to 100” means that the total amount of each component other than purified water is the purified water. It shows that it was made to become 100 mass% by adding the amount.

(4) Hair dyeing treatment In the above-mentioned “(1) Preparation of first agent for oxidative hair dyeing” 5 g of the first agent for oxidative hair dyeing and “(2) Preparation of second agent for oxidative hair dyeing” above. 5 g of the prepared second agent for oxidative hair dyeing was mixed until uniform. Apply the brush to which the resulting mixture is adhered to the front and back of the hair bundle that has been spread in the shape of a fan of 1 g of white hair (Mathai Japan, Shigle Tuft) and leave it at 30 ° C for 30 minutes. The hair was dyed. Thereafter, the hair bundle was washed with water, and the washed hair bundle was washed once with the shampoo composition prepared in “(3) Preparation of shampoo composition” and dried.

(5) Color difference measurement The color difference of the hair | bristle bundle processed by said "(4) hair dyeing process" was measured with Nippon Denshoku Industries Co., Ltd. spectroscopic colorimeter "SE-2000". The measured L values are shown in Tables 1-3. The smaller the L value is, the deeper the hair bundle is dyed (that is, the better the dyeability). The results are shown in Tables 1-3.

(6) Evaluation of dyeability The sensory evaluation was performed by five professional panelists on the dyeing condition (darkness) of the hair bundle treated in the above "(4) Hair dyeing". Evaluation is made in 5 stages (5 points: very good, 4 points: good, 3 points: normal, 2 points: bad, 1 point: very bad) Ranked by. Those rated as ◎ and ○ are acceptable as products. The results are shown in Tables 1-3.
<Standard>
A: Total score of 20 points or more B: Total score of 15 points or more and less than 20 Δ: Total score of 10 points or more and less than 15 points ×: Total score of less than 10 points

(7) Evaluation of touch Sensory evaluation was performed by five specialized panelists on the touch when the hand was passed through the hair bundle processed in the above "(4) Hair dyeing". Evaluation is 5 grades (5 points: no catches can be confirmed, 4 points: no catches can be confirmed, 3 points: no catches can be confirmed, 2 points: catches can be confirmed, 1 point: clear catches The total score of each panel was summed up and ranked according to the following criteria. Those rated as ◎ and ○ are acceptable as products. The results are shown in Tables 1-3.
<Standard>
◎: Total score is 20 points or more ○: Total score is 15 points or more and less than 20 points,
Δ: Total score is 10 or more and less than 15 ×: Total score is less than 10 points.

Claims (8)

(A) a surfactant;
(B) a diester of an aliphatic alcohol having 8 to 30 carbon atoms;
(C) pivalate Isodeshi le;
The 1st agent for oxidative hair dye containing. The first agent for oxidative hair dyeing according to claim 1, wherein the aliphatic alcohol has 14 to 18 carbon atoms. Content of the said phosphoric acid diester (B) is 0.01-5 mass% with respect to 100 mass% of said 1st agents for oxidation hair dyeing, The 1st for oxidation hair dyeing of Claim 1 or 2 Agent. The oxidative hair dye according to any one of claims 1 to 3 , wherein the surfactant (A) is at least one selected from the group consisting of a nonionic surfactant and a cationic surfactant. First agent. The first agent for oxidative hair dyeing according to any one of claims 1 to 4 , wherein the surfactant (A) is a nonionic surfactant and a cationic surfactant. The first agent for oxidative hair dyeing according to any one of claims 1 to 5 , which is for white hair dyeing. The oxidative hair dye kit containing the 1st agent for oxidative hair dye and the 2nd agent for oxidative hair dyeing in any one of Claims 1-6 . A hair dyeing method comprising applying the first agent for oxidative hair dyeing and the second agent for oxidative hair dyeing according to any one of claims 1 to 6 to hair.