JP4351971B2 - Oily hair cosmetic composition - Google Patents

Description

  The present invention relates to an oily hair cosmetic composition that is used for hair that has been dyed with a hair dyeing agent such as an oxidative hair dye, and that is used without being washed away with water after application.

  Conventionally, a hair cosmetic composition having a high effect of preventing discoloration of hair dyed with a hair dye has been known (see, for example, Patent Document 1). That is, the hair cosmetic composition comprises a 2-methacryloyloxyethyl phosphorylcholine (MPC) homopolymer or a copolymer of MPC and a hydrophobic monomer, a cationic surfactant, a water-soluble polymer, and a silicone oil. include.

On the other hand, a hair styling agent having an excellent setting power and capable of exhibiting a hair styling function such as gloss and smoothness in a well-balanced manner is known (see, for example, Patent Document 2). That is, hair dressing, the organic silicone resin, a hydrogenated product of C ₄ oligomer, a hydrogenated product of components and C ₄ oligomers boiling 80-260 ° C., is composed of components having a boiling point of 270-360 ° C. ing.
JP 2004-143065 A (2nd and 5th pages) Japanese Patent No. 2715131 (first page and second page)

  The hair cosmetic composition described in Patent Document 1 exhibits a color fading prevention effect (fading suppression effect) on dyed hair mainly by a cationic polymer obtained from MPC or the like and a cationic surfactant. . By the way, the hair which performed the hair dyeing process has received the damage to the protein by alkali treatment, and the hair strength has fallen. However, the cationic polymer and the cationic surfactant do not supplement the damaged hair protein. For this reason, the effect of improving the strength of damaged hair could not be exhibited.

On the other hand, the hair styling described in Patent Document 2 prepares a hairstyle and makes the set last longer, and does not improve the properties of hair dyed with a hair dye treatment agent. Furthermore, by using two types of C ₄ oligomers of hydrogenated product, supplement such as moisture and oil to prevent such hair breakage and hair loss, have a refreshing keep effect giving luster and moisture to hair, the hairstyle It can perform functions such as conditioning and holding a set, and does not improve the strength of hair dyed with a hair dye treatment agent.

  The present invention has been made paying attention to the problems existing in the prior art as described above. The object is to provide an oily hair cosmetic composition capable of improving the strength of damaged hair.

  In order to achieve the above object, the oily hair cosmetic composition of the invention according to claim 1 is an oily hair cosmetic composition applied to hair that has been dyed with a hair dye treatment agent. The component (A), the component (B), and the component (C) shown below are contained.

Component (A): Isoparaffins having a flash point of 70 ° C. or higher and lower than 150 ° C., fatty acid esters such as isopropyl myristate, isopropyl palmitate, octyl palmitate, hexyl laurate, oleyl oleate, dioctyl succinate, and isocetyl stearate At least one kind selected from or vegetable oils.
Component (B): Isoparaffins having a flash point of 40 ° C. or higher and lower than 70 ° C.

Component (C): oily amino acid esters.
The oily hair cosmetic composition according to claim 2 is characterized in that, in the invention according to claim 1, component (A) is an isoparaffin having a flash point of 70 ° C or higher and lower than 150 ° C. .

According to the present invention, the following effects can be exhibited.
In the oily hair cosmetic composition of the invention according to claim 1, isoparaffins, fatty acid esters or vegetable oils having a flash point of 70 ° C. or higher and lower than 150 ° C. as the component (A), and a flash point of 40 ° C. as the component (B). More than 70 ° C. isoparaffins and oily amino acid esters are included as component (C). The component (C) penetrates into hair damaged by the hair dyeing treatment, functions as a pseudoceramide (keratin intercellular lipid), and is considered to be an alternative component of the hair protein or to interact with the protein. The component (A) is considered to adhere to the hair to form a film, fix and protect the component (C) that has penetrated into the hair. The component (B) acts to reduce the viscosity of the component (A) so that the component (A) is uniformly coated on the hair surface. Therefore, the component (A), the component (B) and the component (C) act synergistically, and the strength of damaged hair can be improved.

  In the oily hair cosmetic composition of the invention according to claim 2, the component (A) is an isoparaffin having a flash point of 70 ° C. or higher and lower than 150 ° C. For this reason, both the component (A) and the component (B) become isoparaffins and the compatibility is enhanced, and the effect of the invention according to claim 1 can be improved.

Hereinafter, embodiments of the present invention will be described in detail.
The oily hair cosmetic composition of this embodiment is applied to hair that has been dyed with a hair dye treatment agent, and contains the following components (A), (B), and (C): It is.

(A): Isoparaffins, fatty acid esters or vegetable oils having a flash point of 70 ° C. or higher and lower than 150 ° C.
(B): Isoparaffins having a flash point of 40 ° C. or higher and lower than 70 ° C.

(C): Oily amino acid esters.
Here, the flash point means a minimum temperature at which the vapor mixture of component (A) or the vapor of component (B) and air falls within the combustion range, and is a physical property value indicating volatility. The component (A) having a high flash point has low volatility and high viscosity, and the component (B) having a low flash point has high volatility and low viscosity. It is considered that the component (C) penetrates into hair damaged by the hair dyeing treatment, becomes an alternative component of the protein constituting the hair, or shows an interaction with the protein. In this embodiment, by combining the component (A) having a high flash point with the component (B) having a low flash point, the component (A) having a high flash point adheres to the hair surface and covers the hair surface. The component (C) that has penetrated into the inside is fixed and protected.

First, the component (A) will be described.
This component (A) is a component for adhering to and protecting the component (C) that has adhered to the hair surface that has been dyed to form a film and has penetrated into the hair. Furthermore, the component (A) is a component that improves the unity of the hair and gives a moisturizing feeling. Examples of isoparaffins having a flash point of 70 ° C. or higher and lower than 150 ° C. include those selected from light isoparaffin, light liquid isoparaffin, heavy liquid isoparaffin, liquid isoparaffin, and volatile isoparaffin and having a flash point of 70 ° C. or higher and lower than 150 ° C. . Specifically, for example, heavy liquid isoparaffin (flash point 145 ° C., Pearl Ream 6 manufactured by Nippon Oil & Fats Co., Ltd.), light liquid isoparaffin (flash point 83 ° C., Isosol 400K manufactured by Shin Nippon Petrochemical Co., Ltd.), Light liquid isoparaffin [flash point 74 ° C., Isopar M manufactured by ExxonMobil Co., Ltd.] and the like.

Fatty acid esters are esters of fatty acids and alcohols, and compounds containing amino groups are not included in the present invention. Specific examples of fatty acid esters include 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, octyl palmitate, octyl palmitate, butyl stearate, stearyl stearate, hexyl laurate, myristyl myristate, oleyl oleate, decyl oleate, Hexyldecyl dimethyloctanoate, triisodecyl myristate, isostearyl myristate, 2-ethylhexyl palmitate, ricino Le octyldodecyl, fatty (C _10-30) (cholesteryl / Ranosuteriru), lauryl lactate, cetyl lactate, myristyl lactate, octyldodecyl lactate, dioctyl succinate, lanolin acetate, isocetyl stearate, isocetyl isostearate, 12-hydroxystearic Cholesteryl acid, ethylene glycol di-2-ethylhexanoate, dipentaerythritol fatty acid ester, n-alkyl glycol monoisostearate, cetyl caprate, glyceryl tricaprylate, neopentyl glycol dicaprate, diisostearyl malate, lanolin derivatives, etc. Is mentioned.

  Vegetable oils include olive oil, camellia oil, shea fat, almond oil, tea seed oil, sasanqua oil, safflower oil, sunflower oil, soybean oil, cottonseed oil, sesame oil, beef tallow, cacao butter, corn oil, peanut oil, rapeseed oil , Rice bran oil, rice germ oil, wheat germ oil, pearl barley oil, grape seed oil, avocado oil, carrot oil, macadamia nut oil, castor oil, flaxseed oil, coconut oil, mink oil, egg yolk oil and the like.

  Among these, isoparaffins having a flash point of 70 ° C. or higher and lower than 150 ° C. are preferable because they are the same type of compound as the isoparaffins of component (B) and have high compatibility and can improve hair strength.

  The content of the component (A) is preferably 1 to 99% by mass, more preferably 3 to 95% by mass, and particularly preferably 10 to 90% by mass in the oily hair cosmetic composition. When this content is less than 1% by mass, the component (A) adheres to the hair surface to form a film, and the component (C) that has penetrated into the hair cannot be sufficiently fixed, resulting in damage. The strength of the received hair cannot be sufficiently improved. On the other hand, when it exceeds 99% by mass, the content of the other component such as the component (B) is insufficient, and the effect of the component (A) cannot be sufficiently exhibited.

Next, the component (B) will be described.
This component (B) reduces the viscosity of the component (A) having a high flash point, and serves as a carrier for the component (A) having a high flash point to adhere to the hair surface that has been dyed to cover the hair surface. It is a component that helps to improve hair strength. Furthermore, a component (B) is a component which improves the slipperiness of hair. The isoparaffin having a flash point of 40 ° C. or more and less than 70 ° C., which is the component (B), is selected from light isoparaffin, light liquid isoparaffin, heavy liquid isoparaffin, liquid isoparaffin, volatile isoparaffin and isododecane. Isododecane and volatile isoparaffins are particularly preferred. Specifically, for example, light isoparaffin [flash point 62 ° C., Isopar L manufactured by ExxonMobil], isododecane [flash point 48 ° C., Marcazole R manufactured by Maruzen Petrochemical Co., Ltd.], hydrogenated polyisobutene [flash point 56 ° C. , NAS-3] manufactured by Nippon Oil & Fats Co., Ltd.

  The content of the component (B) is preferably 1 to 99% by mass, more preferably 3 to 95% by mass, and particularly preferably 10 to 90% by mass in the oily hair cosmetic composition. When this content is less than 1% by mass, the effect of reducing the viscosity of the component (A) and the effect as a carrier cannot be sufficiently exhibited. On the other hand, if it exceeds 99% by mass, the content of other components such as component (A) is insufficient, and the effects of component (A) and the like cannot be sufficiently exhibited.

Next, the component (C) will be described.
The oily amino acid esters of this component (C) function as pseudo ceramides, are components that substitute for proteins of hair damaged by hair dyeing treatment, and penetrate into the hair. Furthermore, a component (C) is a component which can provide a moisturizing feeling (conditioning effect) to hair. Since the amino acid ester of the component (C) is oily, it can constitute an oily hair cosmetic composition together with the components (A) and (B), and therefore does not contain aqueous glutamic acid esters and the like. The flash point of oily amino acid esters is 150 ° C. or higher, which is higher than the flash point of isoparaffins of component (A).

  Oily amino acid esters include N-lauroyl-L-glutamate di (phytosteryl 2-octyldodecyl), N-lauroyl-L-glutamate di (cholesteryl behenyl octyldodecyl), N-lauroyl-L-glutamate di ( Cholesteryl octyldodecyl), di-N-lauroyl-L-glutamate (phytosteryl behenyl 2-octyldodecyl), dioctyldodecyl lauroyl glutamate, dioctyldodecyl N-stearoyl-L-glutamate, di-2 N-lauroyl-L-glutamate -Hexyldecyl, N-lauroylsarcosine isopropyl and diethyl glutamate.

  Among these, N-lauroyl sarcosine isopropyl, N-lauroyl-L-glutamate di (phytosteryl 2-octyldodecyl) and N-lauroyl-L-glutamate di (cholesteryl octyldodecyl) are preferable. Here, the flash point of N-lauroyl sarcosine isopropyl is 198 ° C., indicating a value close to the flash point of component (A). These preferable oily amino acid esters are excellent in properties as an alternative component of proteins constituting hair, have high penetrability into hair, and have good compatibility with the component (A).

  The content of component (C) is preferably 0.1 to 10% by mass, more preferably 0.3 to 5% by mass, and particularly preferably 0.5 to 3% by mass in the oily hair cosmetic composition. . When this content is less than 0.1% by mass, it cannot sufficiently penetrate into the hair as an alternative component of the protein constituting the damaged hair, and the strength of the hair can be sufficiently improved. Disappear. On the other hand, when it exceeds 10 mass%, the effect commensurate with the content cannot be obtained.

  In addition to the component (A), component (B) and component (C), other components can be blended in the oily hair cosmetic composition of the present embodiment. As other components, silicone compounds, hydrocarbons, oily components (polyhydric alcohols, waxes, higher alcohols, higher fatty acids) and the like are used.

  Silicone compounds include methylpolysiloxane, methylphenylpolysiloxane, methylhydrogenated (hydrogen) polysiloxane, decamethylcyclopentasiloxane, fluorine-modified silicone, amino-modified silicone, ammonium-modified silicone, hydroxy-terminated organopolysiloxane, pyrrolidone carboxone Acid-modified organopolysiloxane or the like is used.

  As hydrocarbons, other than component (A) and component (B), α-olefin oligomer, synthetic squalane, vegetable squalane, squalane, polybutene, liquid paraffin, ozokerite, ceresin, paraffin, polyethylene powder, microcrystalline wax, Vaseline etc. are mentioned.

  The oil component is preferably blended so that the oily hair cosmetic composition can be easily applied to the hair and the hair is soft and moisturized. As the oil component, polyhydric alcohols, waxes, higher alcohols, higher fatty acids, alkyl glyceryl ethers and the like are used. These oil components may be blended alone or in combination of two or more. The content of the oil component is preferably 30% by mass or less in the oily hair cosmetic composition. When this content exceeds 30% by mass, the hair feels sticky and the touch tends to decrease.

  Examples of the polyhydric alcohol include glycols and glycerins. Examples of glycols include ethylene glycol, diethylene glycol, triethylene glycol, propylene glycol, dipropylene glycol, isoprene glycol, and 1,3-butylene glycol. Examples of glycerins include glycerin, diglycerin, and polyglycerin. Examples of waxes include beeswax, candelilla wax, carnauba wax, jojoba oil, and lanolin.

  Higher alcohols include lauryl alcohol, myristyl alcohol, cetyl alcohol (cetanol), stearyl alcohol, cetostearyl alcohol, aralkyl alcohol, behenyl alcohol, 2-hexyldecanol, isostearyl alcohol, 2-octyldodecanol, decyltetradecanol, oleyl Alcohol, linoleyl alcohol, linolenyl alcohol, lanolin alcohol, etc. are mentioned.

  Examples of higher fatty acids include lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid, isostearic acid, hydroxystearic acid, 12-hydroxystearic acid, oleic acid, undecylenic acid, linoleic acid, ricinoleic acid, and lanolin fatty acid. It is done. Examples of the alkyl glyceryl ether include batyl alcohol (monostearyl glyceryl ether), chimyl alcohol (monocetyl glyceryl ether), selachyl alcohol (monooleyl glyceryl ether), and isostearyl glyceryl ether.

  The total content of the other components listed above is preferably 50% by mass or less. When this content exceeds 50% by mass, the content of component (A), component (B) and component (C) is relatively lowered, and the strength of damaged hair can be sufficiently improved. It is not preferable because it disappears.

  Since the oily hair cosmetic composition of the present embodiment is oily, it preferably contains no water, and even if it contains water, its content is preferably 15% by mass or less. When the water content exceeds 15% by mass, the isoparaffins of the components (A) and (B) are not sufficiently dispersed in the oily hair cosmetic composition, and it is difficult to uniformly act on the hair, and the hair strength Cannot be improved sufficiently.

Next, the said hair dyeing agent and the hair dyeing process using the same are demonstrated.
As the hair dyeing agent, a liquid, gel-like, foam-like, cream-like or paste-like treating agent such as an oxidative hair dye or an acid hair dye (hair manicure) is used. The oxidative hair dye is generally composed of a first agent containing an oxidative dye, an alkali agent and the like, and a second agent containing an oxidant and the like. These first agent and second agent are mixed, and the mixture is applied to the hair, whereby the hair can be dyed in a desired color.

  The first agent contains an oxidation dye, an alkali agent and the like. As the oxidation dye, components such as paraphenylenediamine, N, N-bis (2-hydroxyethyl) -paraphenylenediamine, toluene-2,5-diamine and a salt thereof are blended according to a conventional method. As the alkaline agent, 28% ammonia water or monoethanolamine is used. In general, oxidation dyes are classified into main intermediates and couplers, but the above-mentioned paraphenylenediamine, toluene-2,5-diamine and salts thereof correspond to main intermediates and have excellent hair dyeing power. These components are used alone or in combination.

  On the other hand, as couplers, resorcin, pyrogallol, catechol, m-aminophenol, m-phenylenediamine, o-aminophenol, 2,4-diaminophenol, 1,2,4-benzenetriol, toluene-3,4-diamine , Toluene-2,4-diamine, hydroquinone, α-naphthol, 2,6-diaminopyridine, 1,5-dihydroxynaphthalene, 5-amino-o-cresol, diphenylamine, p-methylaminophenol, phloroglucin, 2,4 -Diaminophenoxyethanol, gallic acid, tannic acid, ethyl gallate, methyl gallate, propyl gallate, pentaploid, 1-methoxy-2-amino-4- (2-hydroxyethyl) aminobenzene, 5- (2-hydroxyethyl) Amino) -2-methylpheno Le, like their salts. These couplers may be used alone or in combination of two or more.

  0.01-15 mass% is preferable and, as for content of an oxidation dye, 0.1-10 mass% is more preferable. When the content is less than 0.01% by mass, sufficient hair dyeing power cannot be obtained, and when the content exceeds 15% by mass, no further improvement in hair coloring power is observed. Becomes a natural hair dye.

  An alkaline agent is mix | blended in order to provide the lightness to hair by promoting the effect | action of the oxidizing agent contained in a 2nd agent. This alkaline agent is 28% aqueous ammonia or monoethanolamine. These alkali agents may be blended singly or in combination of two kinds.

  0.1-10 mass% is preferable and, as for content of an alkaline agent, 0.5-8 mass% is more preferable. When the content is less than 0.1% by mass, sufficient hair dyeing power cannot be obtained, and when it exceeds 10% by mass, the bleaching power is too strong and it is difficult to dye deeply, especially for white hair. The hair cannot be dyed sufficiently, and the hair may be damaged.

  Next, the pH of the first agent is preferably 8 to 12, more preferably 9 to 11. If the pH of the first agent is less than 8, the action of the oxidizing agent may not be sufficiently promoted. On the other hand, when the pH exceeds 12, when hair is dyed, there is a risk that problems such as damage occur in the hair.

  The first agent may contain water, a pH adjuster, a surfactant, an oily component, etc. as other components. Water is blended in an appropriate amount to make the first agent as a solution, dispersion or emulsion as a solvent or dispersion medium for each component. The water content in the mixture is preferably 50 to 95% by mass, more preferably 70 to 90% by mass. If the content is less than 50% by mass, it may be difficult to stably form an aqueous solution, dispersion or emulsion. On the other hand, when it exceeds 95 mass%, it becomes difficult to ensure the uniformity and stability of the mixture.

  In order to set the pH of the first agent within the above range, the first agent preferably contains a pH adjuster. Specific examples of the pH adjuster include phosphoric acid, citric acid, sulfuric acid, acetic acid, lactic acid, tartaric acid and the like. The content of the pH adjusting agent in the first agent is preferably set to an amount such that the pH of the first agent is in the above range.

  The surfactant is blended to maintain the stability of the first agent. Examples of the surfactant include nonionic surfactants, cationic surfactants, anionic surfactants, and amphoteric surfactants.

  Specific examples of nonionic surfactants include polyoxyethylene (hereinafter referred to as POE) alkyl ethers, POE alkylphenyl ethers, POE / polyoxypropylene (hereinafter referred to as POP) alkyl ethers, and POE sorbitan fatty acid esters. And POE propylene glycol fatty acid ester. Specific examples of POE alkyl ethers include POE lauryl ether, POE cetyl ether, POE stearyl ether, and POE behenyl ether.

  Specific examples of the cationic surfactant include lauryl trimethyl ammonium chloride, stearyl trimethyl ammonium chloride, alkyl trimethyl ammonium chloride, distearyl dimethyl ammonium chloride, cetyl trimethyl ammonium bromide, stearyl trimethyl ammonium bromide, ethyl lanolin sulfate fatty acid aminopropyl Examples thereof include ethyldimethylammonium, stearyltrimethylammonium saccharin, cetyltrimethylammonium saccharin and the like.

  Specific examples of the anionic surfactant include alkyl sulfates such as sodium lauryl sulfate, POE alkyl sulfates such as POE sodium lauryl ether sulfate, alkyl sulfate esters such as lauryl sulfate triethanolamine, stearoylmethyl taurine sodium, dodecyl Examples include benzene sulfonic acid triethanolamine, sodium tetradecene sulfonate, POE lauryl ether phosphoric acid and salts thereof.

  Specific examples of the amphoteric surfactant include 2-undecyl-N, N, N- (hydroxyethylcarboxymethyl) -2-imidazoline sodium, cocoamidopropyl betaine, lauryldimethylaminoacetic acid betaine and the like.

  Examples of the oil component include higher alcohols, fats and oils, waxes, hydrocarbons, esters, and silicones. Specific examples of the higher alcohol include lauryl alcohol, myristyl alcohol, cetyl alcohol, stearyl alcohol, cetostearyl alcohol, and behenyl alcohol.

  Specific examples of fats and oils include glyceride of olive oil, specific examples of waxes include beeswax, lanolin, jojoba oil, etc. Specific examples of hydrocarbons include liquid paraffin, solid paraffin, isoparaffin, squalane and the like. It is done. Specific examples of esters include isopropyl myristate and octyldodecyl myristate. Specific examples of silicones include dimethylpolysiloxane, methylphenylpolysiloxane, polyether-modified silicone, highly polymerized silicone, and amino-modified silicone. It is done.

  Furthermore, as other components, fatty acids such as lauric acid, myristic acid and linolenic acid, sugars such as sorbitol and maltose, alkyl glyceryl ethers such as polyhydric alcohol, batyl alcohol and chimyl alcohol, gum arabic, caraya gum, gum tragacanth and sodium alginate , Xanthan gum, cellulose derivatives, cross-linked polyacrylic acid, water-soluble polymer compounds such as polydimethylmethylenepiperidinium chloride, preservatives such as parabens, chelating agents such as EDTA-2Na, plant extracts, herbal extracts, vitamins, A fragrance | flavor, a ultraviolet absorber, etc. are mentioned. Moreover, you may mix | blend at least 1 type chosen from what is listed in "quasi-drug material standard" (June 1991 issue, Yakuji Nippo).

Examples of the dosage form of the first agent include aqueous solutions, dispersions, emulsions, gels, foams, and creams.
Next, the second agent contains an oxidizing agent or the like as described above. This oxidizing agent is blended to oxidize an oxidative dye to develop a color and decolorize melanin contained in the hair. Specific 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, peroxide. Examples thereof include magnesium oxide, 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 preferred because of its excellent melanin decolorizing power.

  The content of the oxidizing agent in the mixture is preferably 0.1 to 9% by mass, more preferably 1 to 6% by mass. When this content is less than 0.1% by mass, the oxidative dye cannot be sufficiently oxidatively polymerized. On the other hand, if it exceeds 9% by mass, hair damage cannot be reduced.

  The second agent contains water, oily components, surfactants and the like described in the first agent as other components. Moreover, when hydrogen peroxide is contained as an oxidizing agent, it is preferable to contain a stabilizer in order to improve the storage stability of hydrogen peroxide. Examples of hydrogen peroxide stabilizers include urea, phenacetin, sodium stannate, ethylene glycol phenyl ether, 8-oxyquinoline, phosphoric acid, 1-hydroxyethane-1,1-diphosphonic acid and its salts, dibutylhydroxytoluene, etc. Is mentioned. Moreover, you may mix | blend at least 1 type chosen from what is listed in "quasi-drug material standard" (June 1991 issue, Yakuji Nippo). Examples of the dosage form of the second agent include aqueous solutions, dispersions, emulsions, gels, foams, and creams.

  Then, a mixture is obtained by mixing and preparing the first agent and the second agent at a predetermined ratio. The mixing ratio of the first agent and the second agent is preferably the first agent: second agent = 1: 0.5 to 1: 5 in mass ratio. When the amount of the first agent increases or the amount of the second agent increases from this mixing ratio, the content of each component in the first agent and the second agent is determined in terms of hair dyeing power and suppression of damage to the hair. It becomes difficult to set.

  Examples of the dosage form of the mixture include aqueous solutions, dispersions, emulsions, gels, foams, and creams. The mixture is applied to the hair, and the hair to which the mixture is applied is gradually dyed by being left for a certain period of time.

  In order to use the oxidative hair dye, a mixture is prepared by mixing the first agent and the second agent in a mixing ratio of, for example, 1: 1 by mass ratio, and the required amount of the mixture is combed. Alternatively, it is attached to the brush and applied to the hair. In this mixture, the oxidation dye is oxidized and polymerized by an oxidizing agent, whereby the oxidation dye is colored. The hair that has been left for a certain period of time is subjected to plain rinse (rinsing of the hair with water, warm water, etc.) to finish the hair dyeing process.

  The acidic hair dye contains a direct dye, an organic solvent, and the like, and contains other components usually used in hair dyes as other components. Direct dyes are formulated to dye hair. This direct dye is not reactive and can develop color by itself. Specific examples of direct dyes include nitro dyes, acid dyes, basic dyes (cationic dyes), and disperse dyes.

  The oily hair cosmetic composition of the present embodiment is applied to hair that has been dyed with the hair dyeing agent as described above, and the application method is to attach the oily hair cosmetic composition to a comb or brush. Or by taking it directly on the hand and applying it to the hair. After the application, it is desirable to dry the oily hair cosmetic composition as it is without washing it away with water in order to improve the strength of the dyed hair.

  When preparing an oily hair cosmetic composition, for example, isoparaffins having a flash point of 70 ° C. or higher and lower than 150 ° C. as the component (A) and isoparaffins having a flash point of 40 ° C. or higher and lower than 70 ° C. as the component (B). And oily amino acid esters as the component (C) are weighed and mixed with a predetermined amount. When the obtained oily hair cosmetic composition is applied to hair, the hair is preliminarily dyed with a hair dye treatment agent. In the hair dyeing treatment for hair, for example, a first agent and a second agent of an oxidative hair dye are mixed, and the mixture is attached to a comb or a brush and applied to the hair. Thereby, the oxidation dye is oxidized and polymerized by the oxidizing agent, and the oxidation dye is colored. Apply plain rinse to hair after standing for a certain period of time.

  The oily hair cosmetic composition is attached to a comb or a brush on the hair thus obtained, or is taken by hand and applied to the hair. Thereafter, the oily hair cosmetic composition is air-dried as it is without being washed away with water. By performing the hair dyeing treatment (particularly alkali treatment) as described above, the protein constituting the hair is damaged and the strength of the hair is lowered. On the other hand, oily amino acid esters which are the component (C) in the oily hair cosmetic composition penetrate into damaged hair. It is presumed that the component (C) functions as a pseudo ceramide (keratin intercellular lipid) in the hair, thereby serving as an alternative component of the protein constituting the hair or causing an interaction with the protein. Furthermore, the viscosity of the component (A) is reduced by the component (B), and it is presumed that the component (C) adheres uniformly to the entire hair surface to form a film and fixes and protects the component (C) that has penetrated into the hair. The

The effects exhibited by the above embodiment will be described below.
In the oily hair cosmetic composition of the present embodiment, isoparaffins, fatty acid esters or vegetable oils having a flash point of 70 ° C. or higher and lower than 150 ° C. as the component (A), and a flash point of 40 ° C. or higher and 70 ° C. as the component (B). Less than isoparaffins and oily amino acid esters are included as component (C). When the oily hair cosmetic composition is applied to hair that has been dyed, it is considered that the component (C) therein penetrates into the damaged hair and becomes an alternative component of hair protein. The component (A) is considered to adhere to the hair to form a film and fix the component (C) that has penetrated into the hair. Component (B) is believed to reduce the viscosity of component (A) and act so that component (A) is coated over the entire hair surface. Therefore, the component (A), the component (B) and the component (C) act synergistically, and the strength of damaged hair can be improved.

  In addition, the oily hair cosmetic composition contains isoparaffins having a flash point of 70 ° C. or higher and lower than 150 ° C. as the component (A). For this reason, both the component (A) and the component (B) are isoparaffins, the compatibility is increased, and the hair strength can be improved.

  -By containing the said component (A), a component (B), and a component (C), based on the property of each component, the unity feeling of hair and the slipperiness of hair can be improved.

Next, although the said embodiment is described further more concretely by giving an Example and a comparative example, this invention is not limited to those Examples. In addition, about the hair strength and its increase rate, the unity feeling of hair, and the slipperiness of hair, it evaluated by the method shown below.
<Hair strength and rate of increase>
For the hair before and after treatment with the hair cosmetic composition of each example, the breaking stress value was measured using a tensile tester (Tensilon UTM-II; manufactured by Toyo Baldwin), and the increase rate of the value was determined as the rate of increase in hair strength. (%). The hair strength was evaluated according to the following criteria.

A: Hair strength increase rate is 9% or more, ○: Hair strength increase rate is 7% or more and less than 9%, Δ: Hair strength increase rate is 5% or more and less than 7%, and X: Hair strength increase rate is less than 5%.
<A feeling of unity hair (there is no jumping of the hair tip and a sense of unity)>
5 panelists visually observe the hair, feel unity (4 points), feel somewhat unity (3 points), feel no unity (2 points), feel no unity (1 point) Evaluation was made in 4 stages. The average score is calculated for each paneler's scoring results. The average value is 3.6 points or better (excellent), 2.6 points to 3.5 points is good (good), 1.6 points or more 2 .5 points or less were evaluated as Δ (slightly bad) and 1.5 points or less were evaluated as × (bad).
<Hair slipping>
The slipperiness obtained by touching the hair by the hands of five panelists was evaluated in four levels: very good (4 points), good (3 points), slightly bad (2 points), and bad (1 point). . The average score is calculated for each paneler's scoring results. The average value is 3.6 points or better (excellent), 2.6 points to 3.5 points is good (good), 1.6 points or more 2 .5 points or less were evaluated as Δ (slightly bad) and 1.5 points or less were evaluated as × (bad).
(Examples 1 to 29 and Comparative Examples 1 to 5)
The first and second oxidative hair dye agents shown below were mixed at a ratio of 1: 1, left on the human black hair bundle for 20 minutes, rinsed and dried. Then, the oily hair cosmetic compositions of Examples and Comparative Examples shown in Tables 1 to 5 were uniformly applied to the hair bundle and air-dried as it was. In each of the examples and comparative examples, the hair strength and the rate of increase thereof, the feeling of unity of hair, and the feeling of slipping of hair were measured by the above methods, and the results are shown in Tables 1 to 5.
<Oxidative hair dye>
(First agent)
Paraphenylenediamine 0.2% by mass
Resorcin 1.0% by mass
Paraaminophenol 0.5% by mass
2,6-diaminopyridine 0.2% by mass
Cetyl alcohol 5.0% by mass
Polyethylene glycol 5.0% by mass
Polyoxyethylene (20) cetyl ether 8.0% by mass
Sodium dodecyl sulfate 1.2% by mass
Strong ammonia water 5.0% by mass
Ascorbic acid 0.5% by mass
Purified water balance (second agent)
Hydrogen peroxide (35% by weight aqueous solution) 17.0% by weight
Purified water residual amount The abbreviations in Tables 1 to 5 represent the following meanings.

Isoparaffin A: Heavy liquid isoparaffin (flash point 145 ° C., Pearl Ream 6 manufactured by NOF Corporation)
Isoparaffin B: Light liquid isoparaffin [flash point 83 ° C., Isosol 400K manufactured by Nippon Petrochemical Co., Ltd.]
Isoparaffin C: Light liquid isoparaffin (flash point 74 ° C., Isopar M manufactured by ExxonMobil Corp.)
Isoparaffin X: Light isoparaffin (flash point 62 ° C., Isopar L manufactured by ExxonMobil)
Isoparaffin Y: isododecane [flash point 48 ° C., Marcazole R manufactured by Maruzen Petrochemical Co., Ltd.]
Isoparaffin Z: hydrogenated polyisobutene [flash point 56 ° C., NAS-3 manufactured by NOF Corporation]

  As shown in Table 1, in the oily hair cosmetic compositions of Examples 1 to 6, the strength of the hair and the rate of increase thereof were good, and the feeling of cohesion and the slipping feeling of the hair were both good. It was. On the other hand, as shown in Table 2, when the component (C) is not included (Comparative Example 1), when the component (B) is not included (Comparative Examples 2 and 3), the component (A ) Is not contained (Comparative Example 4), and when it is not oily (Comparative Example 5), the strength of the hair and the rate of increase thereof are all insufficient. In addition, when the component (B) was not included, the slipperiness of the hair was not sufficient.

  As shown in Table 3, in Examples 7 to 15 including the components (A), (B) and (C), the strength of the hair and the rate of increase thereof, the feeling of hair cohesion and the feeling of slipping of the hair are very good. there were. As shown in Tables 4 and 5, in Examples 16 to 29 containing the components (A), (B) and (C), both the strength of the hair and the rate of increase thereof, the feeling of cohesion of the hair and the feeling of slipping of the hair It was good.

In addition, this embodiment can also be changed and embodied as follows.
-It is also possible to mix isoparaffins having a flash point of 150 ° C or higher in the oily hair cosmetic composition.

  ・ Ingredient (A) isoparaffins, fatty acid esters or vegetable oils and ingredient (B) isoparaffins, and further component (C) oily amino acid esters were blended in the hair dye treatment agent, and the hair was treated. It can be configured to improve the strength of the hair.

In the oily hair cosmetic composition, a compatibilizing agent that enhances the compatibility between the isoparaffins of components (A) and (B) and the oily amino acid esters of component (C) can be blended.
The oily hair cosmetic composition may be applied to hair that has been dyed with a hair dye treatment agent, washed away after a certain time, and then dried.

Further, the technical idea that can be grasped from the embodiment will be described below.
The oily hair cosmetic composition according to claim 1 or 2, wherein the water content is 15% by mass or less. When comprised in this way, the effect of the invention which concerns on Claim 1 or Claim 2 can be improved.

  The oily hair cosmetic composition according to claim 1 or 2, wherein the composition is used after being applied to hair dyed with a hair dyeing agent and then dried as it is without being washed away. . When comprised in this way, the intensity | strength of the hair damaged by the hair dyeing process can fully be improved.

  The oily amino acid ester is N-lauroyl sarcosine isopropyl, N-lauroyl-L-glutamate di (phytosteryl-2-octyldodecyl) or N-lauroyl-L-glutamate di (cholesteryl octyldodecyl). Or the oily hair cosmetic composition of Claim 2. When configured in this way, the oily amino acid esters have excellent properties as an alternative component of the protein constituting the hair, have high penetrability into the hair, and are excellent in compatibility with the component (A). The effects of the invention according to claim 1 or claim 2 can be improved.

Claims (2)

An oily hair cosmetic composition applied to hair that has been dyed with a hair dyeing treatment agent, comprising the following components (A), (B), and (C) An oily hair cosmetic composition.
Component (A): Isoparaffins having a flash point of 70 ° C. or higher and lower than 150 ° C., fatty acid esters such as isopropyl myristate, isopropyl palmitate, octyl palmitate, hexyl laurate, oleyl oleate, dioctyl succinate, and isocetyl stearate At least one kind selected from or vegetable oils.
Component (B): Isoparaffins having a flash point of 40 ° C. or higher and lower than 70 ° C.
Component (C): oily amino acid esters. The oily hair cosmetic composition according to claim 1, wherein the component (A) is an isoparaffin having a flash point of 70 ° C or higher and lower than 150 ° C.