JP6910042B2 - First agent for oxidative hair dyeing, oxidative hair dyeing agent kit and hair dyeing method - Google Patents

Description

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

At present, hair coloring is widely used, and hair coloring agents based on various principles according to the purpose and the like are commercially available. Among them, the oxidative hair dye is widely used because of its good dyeability and high durability.

The oxidative hair dye is composed of a first agent containing an oxidative dye and an alkaline agent and a second agent containing an oxidant, and is used by mixing these at the time of use. When this is applied to the hair, the alkaline agent swells the hair to increase the permeability of the oxidative dye, and reacts with the oxidant (usually hydrogen peroxide) to develop the color of the oxidative dye and the melanin in the hair. Causes decomposition and stains the hair.

However, hair dyeing with an oxidative hair dye generally causes roughening of the cuticle of the hair, which causes deterioration of the feel (comb passage) of the hair. In particular, when the hair dyeing target includes gray hair, the difference between the newly growing white part and the dyed black part is conspicuous, and it is necessary to dye the hair frequently, so this problem is even more remarkable. Become.

Generally, in the case of hair including gray hair, it is said that gray hair has a hydrophobic property, and therefore it is difficult for an oxidative dye to penetrate and dye it. In order to solve these problems, Patent Document 1 proposes a first agent for oxidative hair dyeing in which a specific surfactant and a specific ester are blended in combination.

Conventionally, an oxidative hair dye has a good hair dyeing property, but has a drawback that it is irritating to the scalp and the like. In addition, with the recent fashion of hair coloring, it has become desirable to increase the brightness of hair and dye it brightly. However, in order to dye hair brightly, a two-agent type oxidative hair dye is used. It is necessary to increase the amount of the alkaline agent contained in the first agent of the above, and there is a problem that the irritation to the scalp and the like becomes strong. Further, it is well known that when a sufficient amount of ammonia is contained for dyeing, a pungent odor is conspicuous and scalp irritation is often observed, which imposes a burden on the hair. In order to solve these problems, some hair bleaching agents and oxidative hair dyeing agents have been proposed, which have less irritating odor, less irritation to the scalp, and less burden on the hair.

In Patent Document 2, a method of reducing the amount of ammonia in the first agent and using another alkaline agent in combination with a two-agent type oxidative hair dye is known. However, this method has a problem that the hair cannot be dyed in a sufficiently bright color, and when it is used in a large amount, it has a high residual property on the scalp and easily irritates the scalp.

In Patent Document 3, the amount of ammonia in the first agent is 1% by weight or less, 0.1 to 5% by weight of the organic amine is used in combination, and the anionic interface in the entire composition in which the first agent and the second agent are mixed. A two-part oxidative hair dye or hair bleaching agent having an activator content of 5 to 60% by weight and a water content of 25 to 70% by weight has also been proposed. According to this, it is said that an oxidative hair dye or a hair bleaching agent that dyes hair to a bright color, has less irritating odor, and is less irritating to the scalp is provided. However, although organic amines have less irritating odor than ammonia, they have a high residual property on the scalp and may cause hair damage and skin irritation. Further, this oxidative hair dye or hair bleaching agent is liquid and has a problem that it is inferior in handleability when applied to hair and easily diffuses and permeates when it adheres to the scalp.

Further, in Patent Document 4, even if the amount of an alkaline agent such as ammonia in the first agent is reduced, an organic amine is used in combination, and an oxidizing dye, an oxidizing agent, and an anionic surfactant of 1000 to 10000 cps are used in combination. An oxidative hair dye has been proposed. However, although organic amines have less irritating odor than ammonia, they have a high residual property on the scalp and may cause hair damage and skin irritation. Further, this oxidative hair dye or hair bleaching agent is liquid and has a problem that it is inferior in handleability when applied to hair and easily diffuses and permeates when it adheres to the scalp. Further, in Patent Document 5, even if the amount of an alkaline agent such as ammonia in the first agent is reduced, the oxidative hair dyeing is characterized in that it is combined with monoethanolamine hydrochloride and the pH is 8 to 12. Agents have been proposed. However, although the pungent odor was low and the scalp was less irritated, the burden on the hair was not satisfactory.

Specifically, it is required to provide a liquid oxidative hair dye that is stable over time by further reducing the adverse effect on the feel of the finished hair (for example, roughening of the cuticle). None of the existing techniques offer all of the advantages and benefits of the present invention.

Hair damage is caused by the cuticle on the surface peeling off and the moisture inside flowing out. Especially during hair washing, the cuticle is easily affected by friction, which is a major factor in damaging the hair. Therefore, shampoos for damaged hair are required to have a function of protecting the cuticle and reducing friction. Silicone, a synthetic raw material commonly used in shampoos for damaged hair, coats the surface of the hair and plays a role in reducing the friction of the cuticle. It can be said that it is a raw material that realizes smooth finger passage and is highly effective in preventing hair damage. However, highly polymerized silicones and modified silicones used in hair care products are called "build-up", which closes the pores of the scalp and accumulates excessively on the hair surface after long-term use due to their high adhesion to the hair. Cause a phenomenon. Here, the highly polymerized silicone imparts water resistance, moisture retention, and sebum resistance to the hair as a silicone for a protective film. The modified silicone has improved adsorptivity as compared with the highly polymerized silicone, and the sustainability of the conditioning effect is improved. As a result, the scalp environment may be deteriorated, and the cuticle may be peeled off, which may adversely affect the scalp and hair. In addition, it may interfere with hair color dyeing and perming. Against this background, the need for non-silicone is increasing in the development of oxidative hair dyes.

In recent years, the scale of the non-silicone shampoo market has expanded due to the growing natural needs of the cosmetics market as a whole and the needs of consumers who avoid silicones. Since non-silicone shampoo literally does not use silicone, there is no adverse effect on the hair surface or scalp due to build-up. However, since there is no raw material that can replace silicone (persistent adhesion, imparting smoothness to hair), non-silicone shampoo has a weak function of suppressing hair friction during hair washing, and is suitable for damage care. Is unsuitable. In this way, in the development of shampoo for damaged hair, it is difficult to achieve both damage care due to the friction reduction effect during hair washing and scalp care that prevents build-up and keeps the scalp and hair normal, which is a technical trade-off. It can be said that there is a relationship. Against this background, the need for non-silicone is increasing in the development of oxidative hair dyes.

Therefore, recently, "ammonia-free", which does not use ammonia at all, has been strongly desired as an oxidative hair dye that has less irritating odor, less irritation to the scalp, and less burden on the hair. There is. Furthermore, for gray hair dyeing, a synthetic chemical dye called PPD (para-phenylenediamine) is used in many commercially available gray hair dyes and hair coloring agents. PPD is an indispensable ingredient for gray hair dyeing and hair coloring agents because it can easily produce various colors and can be dyed in dark colors, but it is known to cause allergic symptoms. There is. For this reason, "PPD-free" has recently become strongly desired. Furthermore, safer and more secure products are required, and not only "silicon-free", "ammonia-free", and "PPD-free" oxidative hair dyes, but also organic certified COSMOS certified VEGAN and HALAL certified. Things are becoming more and more sought after. In addition, there is an increasing tendency to use recycled and sustainable natural raw materials as much as possible, and not only the ingredients but also the environment-friendly in-house factories, manufacturing processes, and packaging that have received two certifications, COSMOS and ISO22716. Is becoming more demanding.

Japanese Unexamined Patent Publication No. 2009-161492 Japanese Unexamined Patent Publication No. 10-25230 Japanese Unexamined Patent Publication No. 2001-354531 Japanese Unexamined Patent Publication No. 2004-339179 Japanese Unexamined Patent Publication No. 2004-26699

An object of the present invention is to provide a first agent for oxidative hair dyeing, which has less adverse effect on the feel of finished hair (for example, rough cuticle) and is stable over time.

The present inventor has investigated the above-mentioned problems, and blends a nonionic surfactant having an HLB of 12 or less, a liquid oil or fat agent, a higher alcohol having C14 or more, an anionic surfactant or an amphoteric surfactant, and a solvent. As a result, we have found a technique for providing an oxidative hair dye composition that is stable over time with less adverse effects on the feel of the finished hair (for example, roughening of the cuticle), and completed the present invention. That is, the present invention includes the following aspects.

Item 1. (A) At least one HLB12 or less nonionic surfactant, (B) At least one liquid oil and fat agent, and at least one higher alcohol having C14 or more, and (C) At least one anion. A first agent for oxidative hair dyeing, which comprises a surfactant or at least one amphoteric surfactant and (D) at least one solvent.
Item 2. The first agent for oxidative hair dyeing according to claim 1, wherein the content of the nonionic surfactant (A) is 10 to 20% by mass with respect to 100% by mass of the first agent for oxidative hair dyeing.
Item 3. The content of the liquid oil / fat agent is 5 to 15% by mass with respect to 100% by mass of the first agent for oxidative hair dyeing, and the content of the higher alcohol is 100% by mass of the first agent for oxidative hair dyeing. The first agent for oxidative hair dyeing according to claim 1 or 2, which is 0.001 to 5% by mass based on the amount.
Item 4. The oxidation according to any one of claims 1 to 3, wherein the content of the anionic surfactant or the amphoteric surfactant is 3 to 12% by mass with respect to 100% by mass of the first agent for oxidative hair dyeing. The first agent for hair dyeing.
Item 5. The first agent for oxidative hair dyeing according to any one of claims 1 to 4, wherein the content of the solvent is 5 to 25% by mass with respect to 100% by mass of the first agent for oxidative hair dyeing.
6. An oxidative hair dye kit containing the first agent for oxidative hair dye according to any one of claims 1 to 5.
Item 7. 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.

By using the first agent for oxidative hair dyeing of the present invention, not only the texture of the liquid oxidative hair dyeing agent is improved, but also the stability of the liquid oxidative hair dyeing agent is improved, and the hair dyeing agent is applied and left unattended. It is possible to improve the effect of preventing the dripping of the hair. In addition, an oxidative hair dyeing agent kit and a hair dyeing method using the first agent for oxidative hair dyeing of the present invention can also be provided.

It is a figure which showed the outline of the base break technology. It is a flow chart which shows the application method of the base break used in an Example, and the effect thereof. It is a figure which shows the detail of the base break used in an Example.

In the present invention, the "first agent for oxidative hair dyeing" 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. Refers to the first agent in the oxidative hair dye kit used in combination with.

Although the present specification concludes with the scope of claims that specifically point out and explicitly claim the present invention, it is believed that the present invention will be better understood from the following description. All percentages, portions and ratios are based on the total weight of the compositions of the invention unless otherwise specified. All such weights for the presented ingredients are based on the concentration of active substance and therefore do not include carriers or by-products that may be included in commercial materials.

1. 1. First Agent for Oxidation Hair Dyeing The present invention comprises (A) at least one nonionic surfactant having an HLB of 12 or less, (B) at least one liquid oil and fat agent, and a higher alcohol having at least one C14 or more. A first agent for oxidative hair dyeing, which comprises (C) at least one anionic surfactant or at least one amphoteric surfactant, and (D) at least one solvent (in the present invention, "the present invention". It may also be referred to as "the first agent for oxidative hair dyeing"). This will be described below.

The surfactant is not particularly limited as long as it is a surfactant that can be used as an oxidative hair dye, and known ones can be widely used. Examples of the surfactant include anionic amphoteric surfactants, nonionic surfactants, cationic surfactants and the like. Among these, nonionic surfactants, cationic surfactants and the like are preferable, and nonionic surfactants are more preferable, from the viewpoint of being able to dye more uniformly and deeply. Further, from the viewpoint of further reducing the adverse effect on the feel of the hair, anions, amphoteric surfactants, nonionic surfactants and the like are preferable, and a combination of a nonionic surfactant and an anionic surfactant, a nonionic surfactant and the like It is more preferable to use it in combination with an amphoteric surfactant. Therefore, from the viewpoint of being able to dye more uniformly and deeply and further reducing the adverse effect on the feel of the hair, at least one nonionic surfactant and at least one anionic surfactant or at least one kind. It is preferable to use in combination with the amphoteric surfactant of.

Further, from the viewpoint that the effect of the present invention can be more effectively exerted, the oxidative hair dye of the present invention contains at least one nonionic surfactant having an HLB of 12 or less and at least one anionic surfactant as a surfactant. It is preferably used in combination with an activator or an amphoteric surfactant, more preferably containing at least one anionic surfactant and at least one amphoteric surfactant, and further preferably containing each in a specific content.

In the present invention, the HLB of the nonionic surfactant is preferably 12 or less.

Specifically, for example, isostearly glyceryl ether (HLB value 5), polyoxyethylene hydrogenated castor oil isostearate (HLB value 5), PEG diisostearate (6) (HLB5), PEG dioleate (6) (HLB value 5). ), Polyglyceryl-3 diisostearate (HLB value 5), sorbitan distearate (HLB value 5), PEG-10 glyceryl triisostearate (HLB value 5), PEG-15 triisostearate hydrogenated castor oil (HLB value 5). , POE (5) lauryl ether isostearate (HLB value 5), POE (2) cetyl ether (HLB value 5), PEG-3 glyceryl isostearate (HLB value 6), PEG-8 diisostearate (HLB value 6) , Triisostearate POE (20) Hydrophilic Himasi Oil (HLB value 6), POE (3) Cetyl ether (HLB value 6), POE (7) Hydrophilic Himasi oil (HLB value 6), Isostearate POE (15) Hydrophilic castor oil (HLB value 7), diisostearate POE (10) glyceryl (HLB value 7), dilaurate POE (6) (HLB value 7), sesquiisostearate sorbitan (HLB value 7), triisostearate POE (HLB value 7) 30) Hydrophilic castor oil (HLB value 7), isostearate POE (3) (HLB value 7), isostearate POE (5) glyceryl (HLB value 8), isostearate POE (20) hydrogenated castor oil (HLB value) 8), POE diisostearate (12) (HLB value 8), POE triisostearate (20) glyceryl (HLB value 8), POE (5) isostearyl ether (HLB value 8), POE (5) cetyl ether (HLB) Value 8), PEG-30 isostearate hydrogenated castor oil (HLB value 9), isostearate POE (6) (HLB value 9), hydrogenated lecithin (HLB value 9), isostearate POE (10) glyceryl (HLB value) 10), POE isostearate (8) glyceryl (HLB value 10), POE diisostearate (20) glyceryl (HLB value 10), POE triisostearate (30) glyceryl (HLB value 10), POE (8) stearyl ether ( HLB value 10), POE (7) cetyl ether (HLB value 10), monoisostearate POE (8) (HLB value 10), isostearate POE (40) hydrogenated castor oil (HLB value 11), POE (10) Isostearyl ether (H LB value 11), POE isostearate (10) (HLB value 11), POE isostearate (15) glyceryl (HLB value 12), POE (15) isostearyl ether (HLB value 12) and the like.

Furthermore, polyoxyethylene monoalkyl ether lauromacrogol (HLB value 13.6), polyoxyethylene lauryl ether (HLB value 9.7), polyoxyethylene cetyl ether (HLB value 5.3, 11.2, 11. 9), Polyoxyethylene lauryl ether (HLB value 9.7), Polyoxyethylene cetyl ether (HLB value 5.3, 11.2, 11.9), Polyoxyethylene oleyl ether (HLB value 4.9, 9) ), Polyoxyethylene stearyl ether (HLB value 4.9, 10.7), Polyoxyethylene alkyl (12-14) ether (HLB value 8.1), Polyoxyethylene tridecyl ether (HLB value 8.3, 11.4), Polyoxyethylene myristyl ether (HLB value 7.6,9), Polyoxyethylene isostearyl ether (HLB value 4.9, 9), Polyethylene glycol dilaurate (HLB value 9.7), Dipalmitin Polyethylene Glycol Acid 150 (HLB Value 3.6), Polyethylene Glycol Dioleate (HLB Value 8), V-Liethylene Glycol Distearate (1) (HLB Value 8), Polyethylene Glycol Diisostearate (HLB Value 8, 10.3), Polyoxyethylene glyceryl isostearate (HLB value 10.2), pooxyethylene glyceryl triisostearate (HLB value 7.2, 10.2), polyoxyethylene disistreate trimethylolpropane (HLB value 6.5), mono Polyoxyethylene oleicethylene sorbitan (6EO) (HLB value 11.8), polyoxyethylene sorbitan trioleate (20EO) (HLB value 10.8), polyoxyethylene sorbitan tristearate (20E) O.) (HLB value 10.7), polyoxyethylene hydrogenated castor oil 20 (HLB value 10.1), polyoxyethylene hydrogenated castor oil (HLB value 10.1), polyoxyethylene glycol laurate cured castor oil (HLB value 10.1) HLB value 9), Polyoxyethylene monoisostearate Hardened castor oil (HLB value 8.6, 12), Polyoxyethylene sorbit tetraoleate (HLB value 5,11.2), Polyoxyethylene sorbit pentaoleate (HLB) Value 11.4), polyoxyethylene sorbit isostearate (3E) .. O. ) (HLB value 4.7) and the like.

The nonionic surfactant (A) may be used alone or in combination of two or more.

The content of the nonionic surfactant (A) is, for example, 10 to 20% by mass, preferably 12 with respect to 100% by mass of the first agent for oxidative hair dyeing from the viewpoint that the effect of the present invention can be more reliably exhibited. ~ 18% by mass.

The oily component of the liquid oil / fat agent includes liquid and solid oils, for example, higher alcohols (myristyl alcohols) having C14 or higher, as shown below. Examples of the higher alcohol include alcohols having 12 to 25 carbon atoms such as myristyl alcohol, cetanol, stearyl alcohol, oleyl alcohol, behenyl alcohol, and cetostearyl alcohol. Examples of higher fatty acids include lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid, oleic acid, isostearic acid, 12-hydroxystearic acid, undecylenic acid and the like.

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, palm oil, and hardened oil. Be 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-based hydrocarbons include light isoparaffin, light liquid isoparaffin, squalane, paraffin, liquid paraffin, liquid isoparaffin, petrolatum, and microcrystalline wax. Examples of the silicone include dimethyl silicone, cyclic silicone, polyether-modified silicone, amino-modified silicone, polyglycerin-modified silicone, and methylphenyl silicone. The oily component of the liquid and solid fats and oils is not particularly limited, and examples thereof include vegetable oils, animal oils, waxes, petroleum hydrocarbons, higher fatty acids, and higher alcohols. Among these, higher alcohols of C14 or higher are preferable from the viewpoint that the effects of the present invention can be more reliably exhibited.

The liquid oil and fat agent and the higher alcohol (B) having C14 or higher may be used alone or in combination of two or more.

Regarding the content of the liquid fat and oil and the higher alcohol (B) having C14 or higher, the content of the liquid fat and oil is 100% by mass of the first agent for oxidative hair dyeing from the viewpoint that the effect of the present invention can be more reliably exhibited. On the other hand, for example, it is 5 to 15% by mass, preferably 7.5 to 11.5% by mass. The content of the higher alcohol having C14 or higher is, for example, 0.001 to 5% by mass, preferably 0.001 to 3% by mass, based on 100% by mass of the first agent for oxidative hair dyeing.

Examples of the anionic surfactant include fatty acid salts (potassium salt, sodium salt, isopropanolamine salt, etc. of fatty acids such as palm oil fatty acid, lauric acid, myristic acid, palmitic acid, stearic acid, and oleic acid), alkyl ether carboxylics. Acids (polyoxyethylene lauryl ether acetic acid, polyoxyethylene lauryl ether potassium acetate, sodium lauryl ether acetate, etc.), acyl lactates (sodium stearoyl lactate, sodium isostearoyl lactate, etc.), N-acylsarcosine salts (palm oil fatty acid sarcosine, etc.) , Sodium coconut oil fatty acid sarcosin, sodium lauroyl sarcosin, sodium lauroyl sarcosiate, etc.), N-acylglutamate (potassium coconut oil fatty acid acylglutamate, sodium coconut oil fatty acid acylglutamate, lauroyl glutamate, potassium lauroyl glutamate, sodium lauroyl glutamate, lauroyl glutamate) , Sodium lauroyl glutamate, potassium lauroyl glutamate, stearoyl glutamate, sodium stearoyl glutamate, potassium stearoyl glutamate, sodium N-acyl-L-glutamate, sodium N-lauroyl-L-glutamate, etc.), N-acylmethylalanine salt (palm oil fatty acid) Methylalanine, coconut oil fatty acid methylalanine sodium, laurylmethylalanine, laurylmethylalanine sodium, myristylmethylalanine, myristylmethylalanine sodium, etc.), N-acylmethyl taurine salt (palm oil fatty acid methyl taurine potassium, coconut oil fatty acid methyl taurine sodium) , Palm oil fatty acid methyl taurine potassium magnesium, lauroyl methyl taurine sodium, myristyl methyl taurine sodium, etc.), alkan sulphonate (sodium alkan sulphonate, etc.), alkyl sulfosuccinate [di (2-ethylhexyl) sulfosuccinate, sulfosuccinic acid Sodium lauryl disodium, acyl acetylate (such as coconut oil fatty acid ethyl ester sulphonate), alkyl sulfate (sodium alkyl sulfate, sodium lauryl sulfate, potassium lauryl sulfate, magnesium lauryl sulfate, etc.), alkyl ether sulfate (poly) Oxyethylene alkyl ether sodium sulfate, polyoxyethylene lauryl sulfate -Sodium tel sulfate, etc.), monoalkyl phosphate (lauryl phosphate, sodium lauryl phosphate, etc.), polyoxyethylene alkyl ether phosphate (polyoxyethylene lauryl ether phosphate, sodium polyoxyethylene lauryl ether phosphate, etc.) , Polyoxyethylene cetyl ether phosphoric acid, polyoxyethylene cetyl ether phosphate sodium, polyoxyethylene stearyl ether phosphoric acid, polyoxyethylene stearyl ether phosphoric acid, polyoxyethylene oleyl ether phosphoric acid, polyoxyethylene oleyl ether phosphoric acid (Sodium, etc.) and so on. Among these, polyoxyethylene alkyl ether sodium sulfate is preferable, and polyoxyethylene (additional number of moles of ethylene oxide: 2 to 6, preferably 2 to 4) alkyl (number of carbon atoms: 5 to 20, preferably 8 to 16) is preferable. , More preferably 10-14) Sodium ether sulfate is more preferred.

Moreover, as an amphoteric tenside, an amino acid type amphoteric tenside agent and a betaine type amphoteric tenside agent can be mentioned. Specific examples of the amino acid amphoteric tenside include 2-alkyl-N-carboxymethyl-N-hydroxyethyl imidazolinium betaine, undecyl hydroxyethyl imidazolinium betaine sodium, alkyldiaminoethyl glycine hydrochloride, and N-. Palm oil fatty acid acyl-N'-carboxyethyl-N'-hydroxyethyl ethylenediamine sodium, N-coconut oil fatty acid acyl-N'-carboxyethoxyethyl-N'-carboxyethyl ethylenediamine disodium, N-palm oil fatty acid acyl-N Glycine-type amphoteric tensides such as'-carboxymethoxyethyl-N'-carboxymethylethylenediamine disodium, lauryldiaminoethylglycine sodium; aminopropionic acid-type amphoteric tensides such as sodium laurylaminopropionate and sodium laurylaminodipropionate. Agents; etc. Specific examples of the betaine-type amphoteric surfactant include coconut oil alkyl betaine, lauryl dimethylamino acetate betaine, stearyl dimethyl amino acetate betaine, stearyl dimethyl betaine sodium, coconut oil fatty acid amide propyl betaine, and palm oil fatty acid amide propion. Examples thereof include betaine aminoacetate-type amphoteric surfactants such as betaine and amidopropyl betaine laurate; and sulfobetaine-type amphoteric surfactants such as laurylhydroxysulfobetaine;

The anionic surfactant or amphoteric surfactant (C) may be used alone or in combination of two or more. Further, both an anionic surfactant and an amphoteric surfactant may be added and combined.

Regarding the content of the anionic surfactant or the amphoteric surfactant (C), the content of the anionic surfactant is 100% by mass of the first agent for oxidative hair dyeing from the viewpoint that the effect of the present invention can be more reliably exhibited. On the other hand, for example, it is 3 to 12% by mass, preferably 6 to 9% by mass. The content of the amphoteric surfactant is, for example, 3 to 12% by mass, preferably 6 to 9% by mass, based on 100% by mass of the first agent for oxidative hair dyeing.

The solvent (D) is water or monovalent such as methanol, ethanol, propanol, benzidyl alcohol, phenethyl alcohol, isopropyl alcohol, isobutyl alcohol, hexyl alcohol, 2-ethylhexanol, cyclohexanol, octyl alcohol, butanol, pentanol and the like. Alcohols; Ketones such as acetone and methyl ethyl ketone; Lower alcohols such as ethanol, 2-propanol (isopropyl alcohol), butanol, isobutyl alcohol; propylene glycol, 1,3-butylene glycol, diethylene glycol, dipropylene glycol, isopentyldiol, etc. Glycols; ethylene glycol monoethyl ether (ethoxydiglycol), ethylene glycol monoethyl ether, ethylene glycol monobutyl ether, triethylene glycol monoethyl ether, diethylene glycol diethyl ether, diethylene glycol dibutyl ether, propylene glycol monoethyl ether, dipropylene glycol Glycol ethers such as monoethyl ether; Glycol ether esters such as ethylene glycol monoethyl ether acetate, diethylene glycol monoethyl ether acetate, and propylene glycol monoethyl ether acetate; Glycol esters such as diethoxyethyl succinate and ethylene glycol disuccinate. Classes; benzyl alcohol, benzyloxyethanol, propylene carbonate, dialkyl carbonate, acetone, ethyl acetate, N-methylpyrrolidone; toluene; fluorocarbon, next-generation fluorocarbon; LPG, dimethyl ether, carbon dioxide, cellosolve, dioxane, dimethylformamide, dimethylsulfoxide, It is desirable that one or more selected from crotamitone.

The solvent (D) may be used alone or in combination of two or more.

The content of the solvent (D) is, for example, 5 to 25% by mass, preferably 10 to 20% by mass, based on 100% by mass of the first agent for oxidative hair dyeing, from the viewpoint that the effect of the present invention can be more reliably exhibited. It is mass%.

In addition to the above-mentioned components, the first agent for oxidative hair dyeing of the present invention can be used as a solvent, an oil-based component other than the above, a direct dye, a stabilizer for an oxidative dye, and a stable emulsified state, if necessary depending on the dosage form and the like. Formulated in oxidative hair dyes such as agents, pH adjusters, plant extracts, water-soluble polymers, amino acids and their derivatives, proteins and their derivatives, vitamins, UV protection agents, antioxidants, metal ion blockers, fragrances, etc. It can contain known components that can be used. Among these, from the viewpoint that the effect of the present invention can be more reliably exhibited, the first agent for oxidative hair dyeing of the present invention preferably further contains an oily component other than the above.

Examples of the oxidation dye include a dye intermediate that develops color by polymerization alone, or a combination of a dye intermediate that develops color by polymerization in combination with a coupler and the coupler. The dye intermediate is not particularly limited as long as it can be blended in the first agent for oxidative hair dyeing, and for example, toluene hydrochloride-2,5-diamine, pahara-phenylenediamine hydrochloride, ortho-aminophenol, p-. Phenylenediamine, toluene-2,5-diamine, toluene-3,4-diamine, o-aminophenol, p-aminophenol, p-methylaminophenol, orthoaminofediphenylamine sulfate, toluene-2,5-diamine sulfate, Examples thereof include para-aminophenol sulfate, para-phenylenediamine sulfate, and para-methyl aminophenol sulfate. Couplers that can be combined with dye intermediates as needed include, for example, hydrochloric acid 2,4-diaminophenoxyethanol, m-phenylenediamine, 2,6-diaminopyridine, 5-aminoortocresol, m-aminophenol, α. -Naftor, hydroquinone, resorcin, catechol, 3,3'-iminodiphenol, 2,4-diaminophenol hydrochloride, metaphenylenediamine hydrochloride, 1,5-dihydroxynaphthalene, 5- (2-hydroxyethylamino) -2- Examples thereof include methylphenol, 5-aminoortocresol sulfate, 2,4-diaminophenol sulfate, metaaminophanol sulfate, and metaphenylenediamine sulfate. From the viewpoint of safety, it is desirable not to contain only para-phenylenediamine.

The stabilizer is not particularly limited, and examples thereof include ascorbic acids, thioglycolic acids, cysteines, mercapto compounds, sulfites, hydrogen sulfites, 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 liquid oxidative hair dyeing of the present invention can be dyed more uniformly and deeply, and can further reduce the adverse effect on the feel of the hair, and is therefore particularly suitable for dyeing unevenly colored hair including gray hair. There is.

2. Oxidation Hair Dyeing Agent Kit The present invention includes an oxidative hair dyeing agent kit of the present invention, which comprises the first agent for oxidative hair dyeing of the present invention and the second agent for oxidative hair dyeing of the present invention. Sometimes referred to as "hair agent kit").

The single oxidative hair dye composition of the present invention, or a combination of the first agent and the second agent for oxidative hair dye of the present invention is targeted. The first agent for oxidative hair dyeing usually contains an oxidative dye, an alkaline agent, an oily component, a surfactant, a solvent and the like. The second agent for oxidative hair dyeing usually contains an oxidant and the like in addition to these.

Examples of the oxidizing agent include hydrogen peroxide, urea peroxide, melamine peroxide, sodium peroxide, potassium peroxide, sodium perborate, potassium perborate, ammonium persulfate, sodium peroxide, potassium peroxide, and peroxide. Examples thereof include magnesium, barium peroxide, calcium peroxide, strontium peroxide, hydrogen peroxide adduct of sulfate, hydrogen peroxide adduct of phosphate, and hydrogen peroxide adduct of pyrophosphate. These oxidizing agents may be blended alone 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 oily components, surfactants, stabilizers for oxidizing agents, and solvents, those exemplified in "1. First agent for oxidative hair dyeing" above, or known components can be adopted. ..

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

3. 3. Hair Dyeing and Application Method The present invention includes applying the first agent for oxidative hair dyeing and the second agent for oxidative hair dyeing of the present invention to hair, and the hair dyeing method and application method, particularly, an oxidative dye and an alkaline agent. To the dyed and newly formed parts of the hair of the oxidative hair dye kit, which contains the first agent containing the above agent and the second agent containing the oxidizing agent and is used by mixing the first agent and the second agent at the time of use. (In the present specification, it may be referred to as "the hair dyeing method of the present invention").

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, a mode in which the first agent for oxidative hair dyeing of the present invention and the second agent for oxidative hair dyeing are mixed and then applied to the hair, or the first agent for oxidative hair dyeing of the present invention is applied to the hair and then applied. An embodiment in which the second agent for oxidative hair dyeing of the present invention is applied to hair can be mentioned.

4. Application method by base break (technique to erase the boundary line of hair) (1) It is used to blend dark new hair and bright dyed hair, and can express natural gradation in a short time with low damage.
(2) Even when fading, the conventional retouch and boundary line are difficult to understand, and there is little damage, so there is a great advantage.

The method of applying the oxidative hair dye to the new part is preferably as follows. First, the place to perform the treatment can be a set surface or a shampoo stand. A set surface that allows new hair and dyed hair to be applied separately is preferable. Further, it is preferable that the oxidative hair dye to be applied has a viscosity that allows the newly dyed hair and the dyed hair to be properly applied. After application, it is left for a predetermined time, but the leaving time at this time is preferably 10 minutes or the like. Here, the mechanism of the oxidative hair dye consists of bleaching and coloring. In general, decolorization exerts a sufficient effect even 10 minutes after application, whereas 10 minutes is insufficient for color development. Since the color is developed in the order of blue → green → yellow → orange → red → purple, it is preferable to set the leaving time for a color that develops blue and does not develop red. After the elapse of the leaving time, it is washed with water and dried, and then an oxidative hair dye is applied to the dyed part. Here, the oxidative hair dye may be applied to the newly dyed portion at the same time as the dyed portion. Then, after application, it is left for a predetermined time, washed with water and dried to complete.

FIG. 1 is a diagram showing an outline of a base break technique. As shown in FIG. 1, the base break technique is intended for people who have had hair coloring even once. In the base break technique, a hair color centered on a bluish tint, which has a lifting force, is applied to the new part for 10 minutes to simultaneously develop and decolorize the new part. For the dyed part, use an alkaline color that does not lift and develop the color. The base break technique is a treatment that creates a natural gradation between new hair and dyed hair. At the time of fading, the difference between new hair / dyed hair 1 / dyed hair 2 becomes small because the used drug does not have the ability to lift.

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

(1) Preparation of First Agent for Oxidative Hair Dyeing The first agent for oxidative hair dyeing was prepared according to the formulation shown in Tables 2 to 5 described later. The adjustment procedure is the same as that described in, for example, Japanese Patent Application Laid-Open No. 2017-57164. In Tables 2 to 5, the numerical values relating to the components indicate the mass% of the components with respect to 100% by mass of the first agent for oxidative hair dyeing, and the "remaining portion" is the total amount of each component other than water, and water. It is shown that the amount of the above was added so as to be 100% by mass.

(2) Preparation of Second Agent for Oxidative Hair Dyeing A second agent for oxidative hair dyeing was prepared according to the formulation shown in Table 6 described later. The adjustment procedure is the same as that described in, for example, Japanese Patent Application Laid-Open No. 2017-57164. In Table 6, the numerical values relating to the components indicate the mass% of the components with respect to 100% by mass of the first agent for oxidative hair dyeing, and the "remaining portion" is the total amount of each component other than water and the amount of water. Is added to make it 100% by mass.

(3) Hair dyeing treatment 5 g of the first agent for oxidative hair dyeing prepared in "(1) Preparation of the first agent for oxidative hair dyeing" and "(2) Preparation of the second agent for oxidative hair dyeing" above. 5 g of the prepared second agent for oxidative hair dyeing (the mixing ratio of the first agent for oxidative hair dyeing and the second agent for oxidative hair dyeing was 1: 1) was mixed until uniform. Apply the brush to which the obtained mixture is attached to the front and back of a fan-shaped hair bundle of 1 g of white hair (Matthew Japan, Shigle Tuft (human hair white)), and leave it at 30 ° C for 30 minutes. Hair was dyed by. Then, the hair bundle was washed with water, and the hair bundle after washing with water was washed once with a predetermined shampoo composition and dried.

(4) Evaluation of feel The feel of the hair bundle treated by the hair dyeing treatment when passed through a handgrip was sensory evaluated by 10 specialized panelists. As shown in the table below, the evaluation is performed in 3 stages (3 points: no catch can be confirmed, 2 points: no catch can be confirmed, 1 point: no catch can be confirmed), and each panelist's evaluation is performed. The points were totaled and ranked according to the following criteria. Those evaluated as ◎ and ○ are acceptable as products. The results are shown in Tables 2-5.
<Criteria>
◎: The total score is 26 points or more,
○: The total score is 20 points or more and 25 points or less,
×: The total score is 19 points or less.

FIG. 2 is a flow chart showing the application method of the base break used in the examples and its effect. The application method of the base break used in the examples and its effect are described below. As for the method of applying the base break, as shown in FIG. 2, first, the scene in which the oxidative hair dye was used was set as the set surface, and the oxidative hair dye was applied to the new portion (FIG. 2A). Then, it was left for 10 minutes. The oxidative hair dye is adjusted to a viscous composition that does not drip even when applied. Next, the hair was washed with water and dried (Fig. 2B). Then, an oxidative hair dye was applied to the dyed portion (FIG. 2C). At the same time, an oxidative hair dye was applied to the new part. Then, it was left for 10 minutes, and finally, the hair was washed with water and dried (Fig. 2D). FIG. 3 is a diagram showing details of the base break used in the examples. As shown in FIG. 3, in the examples, the adverse effect on the feel of the finished hair (for example, the roughness of the cuticle) is further reduced, and the hair becomes stable over time.

Regarding the effect of base break, base break refers to a technique for erasing the boundary line of hair. It is used to blend dark new hair and bright dyed hair, and can express natural gradation in a short time with low damage. Even when fading, the conventional retouch and boundary line are difficult to understand, and there is little damage, so there is a great advantage.

As described above, the first agent for oxidative hair dyeing, the oxidative hair dyeing agent kit, and the hair dyeing method according to the present invention are useful for hair coloring, and not only improve the texture of the oxidative hair dyeing agent, but also oxidize. As a first agent for oxidative hair dyeing, an oxidative hair dyeing agent kit, and a hair dyeing method that can improve the stability of the hair dyeing agent and the effect of preventing the hair dye from dripping during application and leaving. It is valid.

Claims (6)

(A) A nonionic surfactant containing at least one HLB 12 or less polyoxyethylene tridecyl ether having a content of 10 to 20% by mass with respect to 100% by mass of the first agent for liquid oxidative hair dyeing.
(B) A liquid fat or oil containing at least one lauryl alcohol having a content of 5 to 15% by mass with respect to 100% by mass of the first agent for this liquid oxidative hair dyeing , and a content for this liquid oxidative hair dyeing. A higher alcohol containing at least one C14 or higher myristyl alcohol or an oleyl alcohol, which is 0.001 to 5% by mass with respect to 100% by mass of the first agent.
(C) The content of the anionic surfactant containing at least one sodium tetradecene sulfonate solution , which is 3 to 12% by mass with respect to 100% by mass of the first agent for liquid oxidative hair dyeing , or the content. An amphoteric surfactant containing at least one coconut oil alkyl betaine solution , which is 3 to 12% by mass with respect to 100% by mass of the first agent for liquid oxidative hair dyeing.
(D) content containing a lower alcohol or glycol ethers, and water soluble agent is 10 to 20 wt% with respect to the first agent 100 wt% for the liquid oxidation hair,
A first agent for a liquid oxidation hair dye,
By mixing with the second agent for oxidative hair dyeing, it becomes an oxidative hair dyeing agent with a predetermined viscosity.
The first agent for liquid oxidative hair dyeing. The oxidative hair dye is used in a hair dyeing method of an oxidative hair dye including a base break technique.
The first agent for liquid oxidation hair dye of claim 1. The content of the anionic surfactant is 6 to 9% by mass with respect to 100% by mass of the first agent for this liquid oxidative hair dyeing, or the content of the amphoteric surfactant is the first agent for this liquid oxidative hair dyeing. 6-9% by mass with respect to 100% by mass,
The first agent for liquid oxidation hair dye according to claim 1 or 2. The content of the nonionic surfactant is 12 to 18% by mass with respect to 100% by mass of the first agent for liquid oxidative hair dyeing.
The first agent for liquid oxidation hair dye according to claim 1. Comprising a first agent for a liquid oxidation hair dye according to any one of claims 1-4, oxidizing hair dye kit. A second agent for the first agent and oxidative hair dye liquid oxidation hair dye according to any one of claims 1-5, comprising applying to the hair, hair method.

Images