JP6883885B2 - How to use oxidant-containing composition, hair treatment agent, hair treatment agent - Google Patents

Description

The present invention relates to an oxidant-containing composition containing an oxidant. More specifically, the present invention is an oxidant-containing composition used as a second agent of a multi-agent hair treatment agent such as a hair bleaching agent, a hair bleaching agent, or an oxidative hair dye, and contains an alkaline agent. The present invention relates to an oxidizing agent composition that reduces the viscosity of the mixture when mixed with the first agent. Further, the present invention is a method for using a multi-agent hair treatment agent such as a hair bleaching agent, a hair bleaching agent or an oxidative hair dye.

As a hair treatment agent for bleaching, bleaching or dyeing hair, a two-agent hair bleaching agent, a hair bleaching agent or an oxidative dyeing agent, which comprises a first agent containing an alkaline agent and a second agent containing an oxidizing agent. The agent is known.

In the two-agent hair treatment agent, it is required to set the viscosity of the first agent to be high in order to improve the dispersion stability of materials having low dispersion suitability such as dyes and oils. On the other hand, it is desirable that the viscosity of the mixture of the first agent and the second agent is low in order to improve the applicability to hair. Therefore, the viscosity of the hair treatment agent is lowered by mixing the low-viscosity second agent with the high-viscosity first agent.

In Patent Document 1, as a technique for improving the mixing property of the high-viscosity first agent and the low-viscosity second agent, the viscosity of the first agent at 25 ° C. is 5000 to 40,000 mPa · s, and the viscosity of the second agent is 25 ° C. A hair treatment agent having a viscosity of 100 to 6000 mPa · s and further containing a higher fatty acid, an amphoteric surfactant, and an alkyl glycoside as a second agent is disclosed.
According to this hair treatment agent, the high-viscosity first agent and the low-viscosity second agent can be easily mixed simply by shaking in a container.

International Publication No. 2015/110919

In a hair treatment agent that mixes a high-viscosity first agent and a low-viscosity second agent, further reduction in viscosity is required in order to improve the applicability to hair.
Therefore, an object of the present invention is to provide an oxidant-containing composition used as a second agent of a hair treatment agent, which further reduces the viscosity of the mixture when mixed with a high-viscosity first agent. To provide.

As a result of diligent studies on the above problems, the present inventor has found that in an oxidizing agent-containing composition used as a second agent of a multi-agent hair treatment agent, a surfactant having a sterol skeleton or a lipophilic group derived from lanolin. The present invention has been completed by finding that the viscosity of the mixture is significantly reduced when the mixture is mixed with the first agent having a high viscosity by containing the surfactant having the above.
That is, the present invention is a method of using the following oxidizing agent-containing composition, hair treatment agent, and hair treatment agent.

The oxidant-containing composition of the present invention for solving the above problems is an oxidant-containing composition used as a second agent of a multi-agent hair treatment agent, and has a viscosity at 25 ° C. of 100 to 10,000 mPa · s. It is characterized by containing (A-1) a surfactant having a sterol skeleton or (A-2) a surfactant having a lipophilic group derived from lanolin.
According to the oxidizing agent-containing composition of the present invention, the viscosity of the mixture can be significantly reduced when mixed with the highly viscous first agent. In addition, the oxidizing agent-containing composition of the present invention is also excellent in mixability with the first agent.

Further, as one embodiment of the oxidizing agent-containing composition of the present invention, (B) a nonionic surfactant (provided that (A-1) a surfactant having a sterol skeleton and (A-2) a lipophilic derived from lanolin are used. Excluding surfactants having an oil group. Hereinafter, it is simply referred to as "(B) nonionic surfactant"), or (C) has a characteristic of containing a cationic surfactant.
By containing (B) a nonionic surfactant, it is possible to suppress a change in viscosity of the oxidizing agent-containing composition during storage.
Further, by containing (C) a cationic surfactant, the feel of hair can be improved.

The hair treatment agent of the present invention for solving the above problems is a hair treatment agent containing a first agent containing an alkaline agent and a second agent containing an oxidizing agent, and the first agent is at 25 ° C. The second agent has a viscosity of 5,000 to 50,000 mPa · s, is the above-mentioned oxidizing agent-containing composition, and has a viscosity lower than that of the first agent.
According to the hair treatment agent of the present invention, since the viscosity of the first agent is high, a material having low dispersibility such as a dye can be stably dispersed in the first agent. Furthermore, since the above-mentioned oxidizing agent-containing composition of the present invention is used as the second agent, it is possible to provide a hair treatment agent having a low viscosity.

Furthermore, one embodiment of the hair treatment agent of the present invention is characterized by containing a carbonate or a sulfate.
According to this feature, there is an effect of further reducing the viscosity of the mixture of the first agent and the second agent, and an effect of suppressing a change in the viscosity of the mixture of the first agent and the second agent with time.

Further, one embodiment of the hair treatment agent of the present invention is characterized in that the viscosity of the hair treatment agent after mixing the first agent and the second agent at 25 ° C. is 1000 to 20000 mPa · s.
According to this feature, it is possible to provide a hair treatment agent having excellent operability in both application and hand coating operations using tools such as brushes and combs.
Further, by setting the viscosity to 1000 mPa · s or more, it also has an effect of suppressing dripping even after application to hair.

Furthermore, one embodiment of the hair treatment agent of the present invention is characterized in that the hair treatment agent is for dyed hair.
Pre-dyed hair is hair that has been treated with a hair dye, a bleaching agent, or a bleaching agent in the past and has some damage, and when a strong tensile stress is applied, further damage such as breakage is likely to occur.
When a high-viscosity hair treatment agent is applied to the dyed hair, a strong tensile stress is generated by the application operation such as brush coating or hand coating, which causes a problem of causing breakage or the like. On the other hand, in the hair treatment agent of the present invention, since the viscosity can be suppressed to a low level, the tensile stress generated during the application operation such as brush coating or hand coating becomes weak, and further damage to the dyed hair occurs. Can be suppressed.

The method of using the hair treatment agent of the present invention for solving the above problems is characterized by including the following steps 1 and 2.
Step 1:
The first agent containing an alkaline agent,
The first agent having a viscosity at 25 ° C. of 5,000 to 50,000 mPa · s,
A second agent containing an oxidizing agent,
(A-1) Surfactant having a sterol skeleton or
(A-2) Contains a surfactant having a lipophilic group derived from lanolin,
Step 2: Prepare a hair treatment agent by mixing a second agent having a viscosity at 25 ° C. of 100 to 10,000 mPa · s and a viscosity lower than that of the first agent.
Step of applying the hair treatment agent to hair

According to the method of using the hair treatment agent of the present invention, a low-viscosity hair treatment agent can be prepared. Therefore, in the step of applying the hair treatment agent to the hair in step 2, the tensile stress on the hair is suppressed and the hair is treated. It has the effect of reducing damage to the hair. Furthermore, there is an effect that it is easy to apply from the root of the hair to the tip of the hair.
Further, according to the method of using the hair treatment agent of the present invention, the hair treatment agent can be easily mixed, so that the work related to the preparation of the hair treatment agent can be reduced.

According to the present invention, it is possible to provide an oxidizing agent-containing composition that significantly reduces the viscosity of a mixture when mixed with a highly viscous first agent.

Hereinafter, the oxidizing agent-containing composition of the present invention will be described in detail.
[About the oxidant-containing composition]
The oxidizing agent-containing composition of the present invention has a viscosity at 25 ° C. of 100 to 10,000 mPa · s, and is derived from an oxidizing agent and a surfactant having a (A-1) sterol skeleton, or (A-2) lanolin. It contains a surfactant having a lipophilic group of the above, and is used as a second agent of a multi-agent hair treatment agent.

The viscosity of the oxidizing agent-containing composition of the present invention at 25 ° C. is 100 to 10000 mPa · s, preferably 100 to 7000 mPa · s, more preferably 100 to 6000 mPa · s, and particularly preferably 100 to 100 to s. It is 5000 mPa · s. By setting the viscosity to 100 to 10,000 mPa · s, the effect of lowering the viscosity of the mixture when mixed with the first agent is exhibited.
The viscosity at 25 ° C. is measured using a B-type viscometer (TV-10 type manufactured by Toki Sangyo Co., Ltd.). When the viscosity is in the range of 1000 to 10000 mPa · s, the measurement is performed under the conditions of rotor No. 3, 12 rpm and 1 minute. When the viscosity is less than 1000 mPa · s under the condition of rotor No. 3, 12 rpm, 1 minute, the viscosity measured under the condition of rotor No. 2, 30 rpm, 1 minute is adopted. When the viscosity exceeds 10000 mPa · s under the condition of rotor No. 3, 12 rpm, 1 minute, the result of measurement under the condition of rotor No. 4, 12 rpm, 1 minute is adopted. In the present invention, all the viscosity measuring methods are carried out according to this method.

The form of the oxidizing agent-containing composition of the present invention may be any form, and examples thereof include liquids, emulsions, creams, and gels. When the oily component is contained, the form such as O / W type, W / O type, W / O / W type is not particularly limited, but an O / W type emulsion is preferable.
Further, it may be in the form of foam or mist at the time of use. In the case of foaming, an aerosol former container and a non-aerosol former container may be used.

Next, each component contained in the oxidizing agent-containing composition of the present invention will be described in detail.
Oxidizing agent The oxidizing agent is not particularly limited as long as it is a substance having oxidizing power. Oxidizing agents include hydrogen peroxide, urea peroxide, melamine peroxide, sodium peroxide, potassium peroxide, sodium peroxide, potassium perborate, ammonium persulfate, sodium peroxide, potassium peroxide, magnesium peroxide, Examples thereof include barium peroxide, calcium peroxide, strontium peroxide, hydrogen peroxide adduct of sulfate, hydrogen peroxide adduct of phosphate, and hydrogen peroxide adduct of pyrophosphate. Examples of the oxidation aid include persulfates such as ammonium persulfate, potassium persulfate and sodium persulfate. Among these, hydrogen peroxide is preferable.

The content of the oxidizing agent in the oxidizing agent-containing composition is not particularly limited, but is, for example, 0.1 to 15% by mass, more preferably 2 to 9% by mass. When hydrogen peroxide is contained as an oxidizing agent, ethylene glycol phenyl ether (phenoxyethanol), hydroxyethanediphosphonic acid, phosphoric acid, citric acid, or a salt thereof should be blended as a stabilizer for improving the stability. Is preferable.

(A-1) Surfactant having a sterol skeleton The surfactant having a sterol skeleton is a surfactant having a sterol skeleton as a lipophilic group.
The sterol skeleton is an alcohol in which a hydroxy group is bonded to the cyclopentahydrophenanthrene ring represented by the following formula 1, and a surfactant having a sterol skeleton is a compound in which a hydrophilic group is bonded to the sterol skeleton. The symbols A to D in the following formula 1 represent each ring constituting the cyclopentahydrophenanthrene ring, and the numbers represent the position numbers of the carbons constituting the cyclopentahydrophenanthrene ring.

The lipophilic group sterol skeleton may have a double bond on the cyclopentahydrophenanthrene ring, and the position where the hydroxyl group is bonded is not particularly limited. Preferably, sterols having a hydroxy group bonded to the C-3 position and having a double bond on the B ring, or stannoles having a hydroxy group bonded to the C-3 position and composed of a saturated ring. Is.

Examples of the sterol skeleton include phytosterols such as β-sitosterol, campesterol, stigmasterol and brassicasterol, or stannoles thereof, cholesterol, cholesterol, lanosterol, ergosterol and the like. Preferred are phytosterols and phytostanols.

On the other hand, the hydrophilic group may have any structure, for example, nonionic hydrophilic groups such as POE chain, polyglycerin, polyglucoside, sorbitan and sucrose, carboxylate, sulfonate, sulfate and phosphorus. Examples thereof include anionic hydrophilic groups such as phosphates and cationic hydrophilic groups such as aliphatic amine salts and quaternary ammonium salts. The hydrophilic group is preferably a nonionic hydrophilic group, and particularly preferably a POE chain.
The number of moles of the POE chain added is not particularly limited, but is preferably 50 or less, more preferably 40 or less, still more preferably 30 or less, and particularly preferably 23 or less. When the number of moles added to the POE chain is small, the rate of change in viscosity of the oxidant-containing composition with time is small, and the effect of excellent storage stability is obtained.
Further, from the viewpoint of the effect of lowering the viscosity of the mixture, the number of moles of the POE chain added is preferably 5 or more, more preferably 10 or more, and further preferably 15 or more.
In addition, POE indicates a polyoxyethylene chain, POP indicates a polyoxypropylene chain, and the number in parentheses following this indicates the number of moles added thereto. The same applies to the following notation.

The HLB of the surfactant having a sterol skeleton is not particularly limited, but is preferably 8 or more, more preferably 10 or more, and particularly preferably 13 or more. The measurement of HLB is the actual measurement of the HLB value by the 20.3.1 emulsification method described in "Handbook-Cosmetics / Pharmaceutical Materials-Revised Edition (issued on February 1, 1977, Nikko Chemicals Co., Ltd.)". ”(Pages 854 to 855). Hereinafter, in the present specification, the method for measuring HLB conforms to this method.

Specific examples of the surfactant having a sterol skeleton include POE phytosterol, POE phytostanol, POE cholesterol, POE cholestanol and the like. Preferred are POE phytosterols and POE phytostanols. From the viewpoint of storage stability, POE phytosterol is particularly preferable.

The content of the surfactant having a sterol skeleton in the oxidizing agent-containing composition is not particularly limited, but is preferably 0.001 to 10% by mass, more preferably 0.01 to 5% by mass, and particularly preferably. Is 0.05 to 3% by mass.

(A-2) Surfactant having a lipophilic group derived from lanolin The surfactant having a lipophilic group derived from lanolin is a surfactant having a lanolin derivative as a lipophilic group.
The lanolin derivative is a substance obtained by hydrolysis, hydrogenation, alkoxylation, etc. using lanolin as a starting material, and the surfactant of the lanolin derivative is a substance in which a hydrophilic group is bonded to the lanolin derivative. Further, a substance having a surface active ability in the lanolin derivative itself may be used, such as potassium lanolin fatty acid and sodium lanolin fatty acid.

The hydrophilic group bonded to the lanolin derivative may have any structure, for example, nonionic hydrophilic groups such as POE chain, polyglycerin, polyglucoside, sorbitan, sucrose, carboxylate, sulfonate, sulfuric acid, etc. Examples thereof include anionic hydrophilic groups such as salts and phosphates, and cationic hydrophilic groups such as aliphatic amine salts and quaternary ammonium salts. The hydrophilic group is preferably a nonionic hydrophilic group, and particularly preferably a POE chain.
The number of moles of the POE chain added is not particularly limited, but is preferably 2 to 50, more preferably 10 to 40.

The HLB of the surfactant having a lipophilic group derived from lanolin is not particularly limited, but is preferably 8 or more, more preferably 10 or more, and particularly preferably 13 or more.

Specific examples of the surfactant having a lipophilic group derived from lanolin include POE lanolin, POE reduced lanolin, POE lanolin alcohol, lanolin fatty acid potassium, and lanolin fatty acid sodium. From the viewpoint that the rate of change in viscosity of the oxidant-containing composition with time is small and the storage stability is excellent, POE lanolin, POE-reduced lanolin, and POE lanolin alcohol are preferable, and POE-reduced lanolin is particularly preferable. is there.

The content of the surfactant having a lipophilic group derived from lanolin in the oxidizing agent-containing composition is not particularly limited, but is preferably 0.001 to 10% by mass, more preferably 0.005 to 5% by mass. Yes, particularly preferably 0.01 to 3% by mass.

By containing (A-1) a surfactant having a sterol skeleton or (A-2) a surfactant having a lipophilic group derived from lanolin in the oxidizing agent-containing composition, the first agent having a high viscosity can be obtained. It is possible to provide a hair treatment agent having an action of lowering the viscosity of the mixture when mixed and having excellent coatability.
Further, by using (A-1) a surfactant having a sterol skeleton and (A-2) a surfactant having a lipophilic group derived from lanolin in combination, the viscosity of the oxidant-containing composition over time It is possible to provide an oxidizing agent-containing composition having excellent storage stability by suppressing the change in the above.

(B) Nonionic Surfactant As one embodiment of the oxidizing agent-containing composition of the present invention, (A-1) a surfactant having a sterol skeleton and (A-2) a lipophilic group derived from lanolin are used. A nonionic surfactant (B) other than the surfactant having the surfactant may be contained. By containing (B) a nonionic surfactant, it is possible to suppress a change in viscosity of the oxidizing agent-containing composition during storage.

(B) Nonionic surfactants include POE alkyl ethers, POE alkyl phenyl ethers, POE / POP alkyl ethers, POE sorbitan fatty acid esters, POE mono fatty acid esters, POE glycerin fatty acid esters, and polyglycerin fatty acids. Examples thereof include esters, monoglycerin fatty acid esters, sorbitan fatty acid esters, sucrose fatty acid esters, alkyl polyglucosides and the like. Specific examples of POE alkyl ethers include POE lauryl ether, POE cetyl ether, POE stearyl ether, POE behenyl ether and the like.

The nonionic surfactant (B) preferably contains an HLB of 10 or less. Specific examples of the nonionic surfactant having an HLB of 10 or less include POE (2) lauryl ether, POE (4) stearyl ether, POP (4) cetyl ether, POE monostearate (5) glyceryl, and POE (2). ) Stearyl ether, POE (2) cetyl ether and the like. Particularly preferred are POE alkyl ethers having an HLB of 10 or less.

The content of the (B) nonionic surfactant in the oxidizing agent-containing composition is not particularly limited, but is preferably 0.001 to 40% by mass, more preferably 0.01 to 30% by mass, and particularly. It is preferably 0.05 to 20% by mass.

(C) Cationic Surfactant In one embodiment of the oxidizing agent-containing composition of the present invention, (C) cationic surfactant may be contained. By containing the (C) cationic surfactant, the feel of the hair can be improved.

A cationic surfactant is a surfactant in which a hydrophilic group that dissolves in water and dissociates ions becomes a cation.
For example, alkyl quaternary ammonium salts such as monoalkyl type quaternary ammonium salt, dialkyl type quaternary ammonium salt, trialkyl type quaternary ammonium salt, benzalconium type quaternary ammonium salt, monoalkyl ether type quaternary ammonium salt, etc. Examples thereof include alkylamine salts, fatty acid amidamine salts, ester-containing tertiary amine salts, amine salts such as arcobel type tertiary amine salts, cyclic quaternary ammonium salts such as alkylpyridinium salts and alkylisoquinolium salts, and benzethonium chloride. ..

Alkyl quaternary ammonium salts are preferable, monoalkyl quaternary ammonium salts and dialkyl quaternary ammonium salts are more preferable, and monoalkyl quaternary ammonium salts are particularly preferable.

Examples of the monoalkyl type quaternary ammonium salt include lauryltrimethylammonium chloride, lauryltrimethylammonium bromide, alkyl (16,18) trimethylammonium chloride, cetyltrimethylammonium chloride, cetyltrimethylammonium bromide, cetyltrimethylammonium saccharin, and chloride. Stearyltrimethylammonium, stearyltrimethylammonium bromide, behenyltrimethylammonium chloride, stearyltrimethylammonium saccharin, alkyl chloride (28) trimethylammonium, diPOE chloride (2) oleylmethylammonium, diPOE stearylmethylammonium, POE chloride (1) Examples thereof include POP (25) diethylmethylammonium, POPmethyldiethylammonium chloride, methacryloyloxyethyltrimethylammonium chloride, behenyltrimethylammonium methylsulfate and the like. Particularly preferred are stearyltrimethylammonium chloride, alkyl (16,18) trimethylammonium chloride, and cetyltrimethylammonium chloride.
The number in parentheses following the alkyl indicates the number of carbon atoms in the fatty acid chain. The same applies to the following notation.

Examples of the dialkyl type quaternary ammonium salt include dialkyl chloride (12 to 15) dimethylammonium, dialkyl chloride (12 to 18) dimethylammonium, dialkyl chloride (14 to 18) dimethylammonium, dicocoyl dimethylammonium chloride, and disetyl chloride. Examples thereof include dimethylammonium, distearyldimethylammonium chloride, and isostearyllauryldimethylammonium chloride.

The content of the cationic surfactant in the oxidizing agent-containing composition is not particularly limited, but is preferably 0.001 to 10% by mass, more preferably 0.01 to 5% by mass, and particularly preferably 0. .05 to 3% by mass.

Other Surfactants The oxidant-containing compositions of the present invention include (A-1) a surfactant having a sterol skeleton, (A-2) a surfactant having a lipophilic group derived from lanolin, and (B). ) Nonionic surfactants and surfactants other than (C) cationic surfactants may be blended.
Examples of other surfactants include anionic surfactants and amphoteric surfactants.

Anionic Surfactants As anionic surfactants , alkyl ether sulfates, POE alkyl ether sulfates, alkyl sulfates, alkenyl ether sulfates, alkenyl sulfates, olefin sulfonates, alkane sulfonates, saturated or unsaturated Examples thereof include fatty acid salts, alkyl or alkenyl ether carboxylates, α-sulfon fatty acid salts, N-acylamino acid type surfactants, phosphoric acid mono or diester type surfactants, and sulfosuccinic acid esters. The counterion of the anion group of these surfactants may be, for example, sodium ion, potassium ion, or triethanolamine.

More specifically, sodium lauryl sulfate, sodium myristyl sulfate, potassium lauryl sulfate, ammonium lauryl sulfate, triethanolamine lauryl sulfate, sodium cetyl sulfate, sodium steyl sulfate, POE sodium lauryl ether sulfate, POE sodium lauryl ether sulfate, POE. Sodium lauryl ether sulfate, POE sodium steyl ether sulfate, sodium stearoyl methyl taurine, sodium dodecyl benzene sulfonate triethanolamine, sodium tetradecyl sulfonate, sodium lauryl phosphate, POE lauryl ether phosphate and its salts, N-lauryl glutamates (lauroyl) (Sodium glutamate, etc.), N-lauroyl methyl-β-alanine salt, N-acyl glycyl sulfate, N-acyl glycyl sulfate, higher fatty acids lauric acid, myristic acid, and salts of these higher fatty acids are exemplified, and 1 or 2 More than seeds can be used.

The content of the anionic surfactant in the oxidizing agent-containing composition is not particularly limited, but is preferably 0.01 to 5% by mass, more preferably 0.05 to 3% by mass, and further preferably 0.1 to 1. It is 5.5% by mass.
The inclusion of an anionic surfactant has the effect of lowering the viscosity due to long-term storage.

Amphoteric tensides Examples of amphoteric tensides include amino acid amphoteric tensides and betaine amphoteric tensides.
Specific examples of the amino acid type amphoteric surfactant include N-lauroyl-N'-carboxymethyl-N'-hydroxyethylethylenediamine sodium (Na lauroamphoacetate) and 2-alkyl-N-carboxymethyl-N-hydroxyethyl. Imidazolinium betaine, undecyl hydroxyethyl imidazolinium betaine sodium, alkyldiaminoethylglycine hydrochloride, N-coconut oil fatty acid acyl-N'-carboxyethyl-N'-hydroxyethylethylenediamine sodium, N-palm oil fatty acid acyl-N '-Carboxyethoxyethyl-N'-carboxyethylethylenediamine disodium, N-palm oil fatty acid acyl-N'-carboxymethoxyethyl-N'-carboxymethylethylenediamine disodium, lauryldiaminoethylglycine sodium, palm oil fatty acid acyl-N Glycine-type amphoteric surfactants such as -carboxyethyl-N-hydroxyethylethylenediamine sodium; aminopropionic acid-type amphoteric surfactants such as sodium laurylaminopropionate, sodium laurylaminodipropionate, and triethanolamine laurylaminopropionate; And so on.
Specific examples of the betaine-type amphoteric surfactant include coconut oil alkyl betaine, lauryl dimethylamino acetate betaine, myristyl dimethyl amino acetate betaine, stearyl dimethyl amino acetate betaine, stearyl dimethyl betaine sodium, coconut oil fatty acid amide propyl betaine, and palm. Aminoacetate betaine-type amphoteric surfactants such as oil fatty acid amide propyl betaine, laurate amide propyl betaine, ricinoleic acid amide propyl betaine, and stearyldihydroxyethyl betaine; sulfobetaine-type amphoteric surfactants such as lauryl hydroxysulfobetaine can be mentioned. ..

The content of the amphoteric surfactant in the oxidant-containing composition is not particularly limited, but is preferably 0.001 to 5% by mass, more preferably 0.005 to 3% by mass, and further preferably 0.01 to 2. It is 5% by mass.

The total amount of all the surfactants to be blended in the oxidizing agent-containing composition is not particularly limited, but is preferably 0.01 to 50% by mass, more preferably 0.05 to 40% by mass, and particularly preferably. Is 0.1 to 30% by mass.

Other Ingredients Any other ingredient may be added to the oxidizing agent-containing composition of the present invention. For example, oily components, preservatives such as phenoxyethanol and sodium benzoate, organic solvents such as ethanol, saccharides such as sorbitol and maltose, water-soluble polymers such as hydroxyethyl cellulose and carboxyvinyl polymer, polydimethylmethylene piperidinium solution, Chelators such as cationized water-soluble polymers such as diallyldimethylammonium chloride and hydroxyethyl cellulose, polyhydric alcohols such as polyethylene glycol and dipropylene glycol, trisodium dihydrate of ethylenediaminehydroxyethyl triacetate, and tetrasodium hydroxyethanediphosphonate. Agents, inorganic salts such as sodium chloride, pH adjusters such as phosphoric acid, lactic acid, ammonium hydrogencarbonate, direct dyes, hair growth ingredients, plant extracts, crude drug extracts, amino acids / peptides, urea, vitamins, fragrances, and ultraviolet rays. Absorbents and the like can be mentioned.

Oily component The oily component is a component that is mixed with an aqueous component such as water or ethanol and a surfactant and emulsified. For example, higher alcohols, fats and oils, waxes, hydrocarbons, higher fatty acids, esters, silicone oils, fluorine oils and the like are exemplified. From these oily components, one kind or two or more kinds can be selected and used.

The higher alcohol is preferably an alcohol having 8 or more carbon atoms. For example, cetyl alcohol (cetanol), stearyl alcohol, cetostearyl alcohol, oleyl alcohol, linoleyl alcohol, linolenyl alcohol, araquil alcohol, behenyl alcohol, lauryl alcohol, myristyl alcohol, 2-hexyldecanol, isostearyl alcohol, 2-octyl. Examples thereof include dodecanol, decyltetradecanol, phytosterol, phytostanol, cholesterol, cholesterol, lanosterol, ergosterol and the like.

Fats and oils are triglycerides, that is, triesters of fatty acids and glycerin. For example, olive oil, rose hip oil, camellia oil, shea butter, macadamia nut oil, almond oil, tea seed oil, southern ka oil, saflower oil, sunflower oil, soybean oil, cotton seed oil, sesame oil, beef fat, cacao fat, corn oil, peanuts. Examples thereof include oil, rapeseed oil, rice bran oil, rice germ oil, wheat germ oil, honeybee oil, grape seed oil, avocado oil, carrot oil, castor oil, flaxseed oil, palm oil, mink oil, egg yolk oil and the like.

Rows are esters of higher fatty acids and higher alcohols. Examples thereof include beeswax, candelilla wax, carnauba wax, jojoba oil, lanolin, whale wax, rice bran wax, sugarcane wax, palm wax, montan wax, cotton wax, baby wax, ibota wax, capoc wax, and cellac wax.

Hydrocarbons are compounds consisting of carbon and hydrogen. Examples thereof include liquid paraffin, paraffin, microcrystalline wax, petrolatum, isoparaffins, ozokerite, selecin, polyethylene, α-olefin oligomer, polybutene, synthetic squalane, squalane, hydrogenated squalane, limonene, turpentine and the like.

The higher fatty acid is preferably a fatty acid having 8 or more carbon atoms. For example, lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid, isostearic acid, hydroxystearic acid, 12-hydroxystearic acid, oleic acid, undecylenic acid, rinoleic acid, ricinoleic acid, lanolin fatty acid and the like can be mentioned.

Esters are compounds obtained by the dehydration reaction of fatty acids and alcohols. For example, diisopropyl adipate, -2-hexyldecyl adipate, isopropyl myristate, myristyl myristate, cetyl octanoate, cetyl isooctanoate, isononyl isononanoate, diisopropyl sebacate, isopropyl palmitate, 2-ethylhexyl palmitate, for example, Cetyl ethylhexanoate, butyl stearate, isocetyl isostearate, hexyl laurate, decyl oleate, fatty acid (C10-30) (cholesteryl / lanosteryl), lauryl lactate, octyldodecyl lactate, lanolin acetate, dipentaerythritol fatty acid ester, mono Examples thereof include N-alkyl glycol isostearate and lanolin derivatives.

Silicone oil is a synthetic polymer in which silicon with an organic group and oxygen are alternately linked by chemical bonds. For example, dimethylpolysiloxane (INCI name: dimethicone), dimethylpolysiloxane with hydroxy end group (INCI name: dimethiconol), methylphenylpolysiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane, polyether-modified silicone, average. Examples thereof include highly polymerized silicones having a degree of polymerization of 650 to 10,000, amino-modified silicones, betaine-modified silicones, alkyl-modified silicones, alkoxy-modified silicones, mercapto-modified silicones, carboxy-modified silicones, and fluorine-modified silicones.

Among the above, examples of the amino-modified silicone include aminopropylmethylsiloxane / dimethylsiloxane copolymer (INCI name: aminopropyldimethicone), aminoethylaminopropylsiloxane / dimethylsiloxane copolymer (INCI name: amodimethicone), and the like. Examples thereof include an aminoethylaminopropylmethylsiloxane / dimethylsiloxane copolymer (INCI name: trimethylsilyl amodimethicone).

The content of the oily component in the oxidizing agent-containing composition is not particularly limited, but is preferably 0.1 to 30% by mass, more preferably 0.5 to 20% by mass, and further preferably 1 to 10% by mass.

Next, the hair treatment agent will be described in detail.
[About hair treatment agents]
The hair treatment agent of the present invention comprises a first agent containing an alkaline agent and a second agent containing an oxidizing agent, which are mixed at the time of use and the mixture is applied to the hair. Then, as the second agent containing an oxidizing agent, the above-mentioned oxidizing agent-containing composition is used.
Specific examples of the hair treatment agent include hair dyes such as oxidative hair dyes, hair bleaching / depigmenting agents, and the like.

The oxidative hair dye is a mixture of a first agent containing an alkaline agent and an oxidative dye and a second agent containing an oxidant, and the oxidative dye is colored by the oxidant to dye the hair. Here, the alkaline agent has a function of expanding the hair and promoting the penetration of the dye and the oxidant, and the oxidant has a function of oxidizing the oxidative dye and a function of decomposing melanin inside the hair. Have.

The hair bleaching / bleaching agent does not contain an oxidative dye in the first agent and bleaches the hair. The hair decolorizing agent decolorizes the hair by oxidatively decomposing the melanin in the hair, and the hair decontaminating agent decolorizes the dye and melanin from the dyed hair.

As described above, the hair dye, the hair bleaching agent, or the hair bleaching agent is typically a two-agent type consisting of the first agent and the second agent, but is a multi-agent type consisting of three or more agents. You may.

The viscosity of the hair treatment agent obtained by mixing the first agent and the second agent at 25 ° C. is preferably 1000 to 20000 mPa · s, more preferably 2000 to 15000 mPa · s, from the viewpoint of coatability, dripping property and the like. It is more preferably 2500 to 10000 mPa · s, and particularly preferably 3000 to 7000 mPa · s. The method for measuring the viscosity at 25 ° C. is the same as that for the oxidizing agent-containing composition.

[About the first agent]
The first agent is a composition containing an alkaline agent. The viscosity of the first agent at 25 ° C. is preferably 5,000 to 50,000 mPa · s, more preferably 6,000 to 45,000 mPa · s, and even more preferably 7,000 to 40,000 mPa · s. The method for measuring the viscosity at 25 ° C. is the same as that for the oxidizing agent-containing composition.

The form of the first agent may be any form, and examples thereof include liquids, emulsions, creams, and gels. When an oily component is contained, the form such as O / W type, W / O type, W / O / W type is not particularly limited, but an O / W type cream or gel is preferable.

Next, each component contained in the first agent will be described in detail.
Alkali agents Examples of alkaline agents include ammonia, alkanolamines, silicates, carbonates, bicarbonates, metasilicates, sulfates, chlorides, phosphates, basic amino acids and the like. Specifically, examples of alkanolamine include monoethanolamine and triethanolamine, examples of silicate include sodium silicate and potassium silicate, and examples of carbonate include sodium carbonate and ammonium carbonate. Examples of the hydrogen carbonate include sodium hydrogen carbonate and ammonium hydrogen carbonate, examples of the metasilicate include sodium metasilicate and potassium metasilicate, examples of the sulfate include ammonium sulfate, and examples of the chloride include ammonium chloride. Examples of the phosphate include monoammonium phosphate and diammonium phosphate, and examples of basic amino acids include arginine, lysine and salts thereof. Among these, ammonia and ammonium salts are preferable.
From the viewpoint of further reducing the viscosity of the mixture of the first agent and the second agent, an alkaline agent having a sulfate or a carbonate is preferable.

The content of the alkaline agent in the first agent is not particularly limited, but is preferably 0.01 to 20% by mass, more preferably 0.1 to 15% by mass.

Oxidizing dye Oxidizing dye is a dye that develops color by oxidative polymerization with an oxidizing agent. Oxidation dyes include dye intermediates that develop color by their own oxidation and couplers that produce various color tones depending on the combination of the dye intermediates.

Dye intermediates are dye precursors, primarily o- or p-phenylenediamines or aminophenols, which are usually colorless or lightly colored compounds themselves.
Specifically, p-phenylenediamine, toluene-2,5-diamine (p-toluylenediamine), N-phenyl-p-phenylenediamine, 4,4'-diaminodiphenylamine, p-aminophenol, o-amino. Phenol, p-methylaminophenol, N, N-bis (2-hydroxyethyl) -p-phenylenediamine, 2-hydroxyethyl-p-phenylenediamine, o-chlor-p-phenylenediamine, 4-amino-m- Examples thereof include cresol, 2-amino-4-hydroxyethylaminoanisole, 2,4-diaminophenol, and salts thereof.

Examples of the coupler include mainly m-diamines, aminophenols or diphenols, and specifically, resorcin, catechol, pyrogallol, fluoroglusin, gallic acid, hydroquinone, 5-amino-o-cresol, m-amino. Phenol, 5- (2-hydroxyethylamino) -2-methylphenol, m-phenylenediamine, 2,4-diaminophenoxyethanol, toluene-3,4-diamine, α-naphthol, 2,6-diaminopyridine, diphenylamine, Examples thereof include 3,3'-iminodiphenyl, 1,5-dihydroxynaphthalene and tannic acid and salts thereof.

Oxidation dyes include acid addition salts of each of the above compounds. Examples of the acid addition salt include addition salts of inorganic acids such as hydrochlorides and sulfates, and addition salts of organic acids such as acetates. From the viewpoint of further reducing the viscosity of the mixture of the first agent and the second agent, an oxidation dye having a sulfate or a carbonate is preferable.

One or two or more of these oxidation dyes can be selected and used depending on the desired color tone.
The content of the oxidative dye in the hair treatment agent is not particularly limited, but is preferably 0.01 to 10% by mass, and more preferably 0.05 to 7% by mass.

Other Ingredients The first agent may contain the "surfactant" and "other ingredients" described in the section of the oxidizing agent-containing composition as arbitrary ingredients. Further, an antioxidant such as ascorbic acid may be blended.

The carbonate hair treatment agent preferably contains a carbonate. The carbonate may be contained in any of the agents constituting the hair treatment agent such as the first agent and the second agent, but it is preferably contained in the first agent. By containing a carbonate, it has the effect of further reducing the viscosity of the mixture of the first agent and the second agent, and the effect of suppressing the change in the viscosity of the mixture of the first agent and the second agent over time. ..

The source of the carbonate may be any substance, and examples thereof include alkaline agents that generate carbonates such as sodium carbonate, ammonium carbonate, sodium hydrogen carbonate, and ammonium hydrogen carbonate.

The sulfate hair treatment agent preferably contains a sulfate. The sulfate may be contained in any of the agents constituting the hair treatment agent such as the first agent and the second agent, but it is preferably contained in the first agent. By containing the sulfate, the effect of further reducing the viscosity of the mixture of the first agent and the second agent is obtained.

The source of sulfate may be any substance, for example, paratoluylene diamine sulfate, paraphenylenediamine sulfate, metaaminophenol sulfate, 5-aminooltocresol sulfate, paraaminophenol sulfate, paranitroortophenylenediamine sulfate. , Sulfuric acid 2,4-diaminophenoxyethanol, sulfuric acid 2,2'-[(4-aminophenyl) imino] bisethanol, paramethylaminophenol sulfate, sulfuric acid 2,6-diaminopyridine and other oxidation dyes that generate sulfates, Examples thereof include alkaline agents that generate sulfates such as ammonium sulfate.

[How to use hair treatment agent]
The method of using the hair treatment agent of the present invention is (step 1) a step of mixing the above-mentioned first agent and the above-mentioned oxidative hair dye composition as a second agent to prepare a hair treatment agent, (step 2). It comprises a step of applying a hair treatment agent to hair.

The operation of mixing the first agent and the second agent in step 1 may be performed by any method. For example, the first agent and the second agent are put into a container and the container is shaken to mix. A method of mixing with a stirring rod, a stirring blade, or the like, a method of mixing with a coating tool such as a brush, and the like can be mentioned.

The step of applying the hair treatment agent to the hair in step 2 may be applied by any method, for example, a method of applying to the hair with an application tool such as a brush or a comb, or a method of applying to the hair by a hand wearing gloves. Examples thereof include a method of applying. From the viewpoint of suppressing the occurrence of uneven application, the method of applying to the hair with a brush is preferable, and from the viewpoint of the convenience of the application operation, the step of applying to the hair by hand wearing gloves is preferable.

The hair may be human hair, beard, eyebrows, shin hair, or other body hair, as well as animal body hair such as a pet. In particular, human hair is preferred.
Further, it is preferable to use it for dyed hair that has been treated with a hair dye, a depigmenting agent or a depigmenting agent in the past.

Next, the embodiment will be described in more detail with reference to Examples and Comparative Examples.
[Oxidizing agent-containing composition (second agent)]
(Examples 1-1 to 1-5, Comparative Example 1-1)
By mixing the components shown in Tables 1 and 2, the oxidant-containing compositions of Examples 1-1 to 1-5 and Comparative Example 1-1 were prepared and used as the second agent of the hair treatment agent. ..
The second agent is produced, for example, as follows. First, each component other than hydrogen peroxide solution and phenoxyethanol is placed in a container, dissolved and emulsified at 80 ° C., and cooled to 40 ° C. Then, hydrogen peroxide solution and phenoxyethanol are added, and the total amount is adjusted to 100% with water. As the mixer, an "emulsification tester ET-SA type" (manufactured by Nikko Chemicals Co., Ltd.) was used.
Next, the produced second agent was stored at 25 ° C. for 1 week, and then the viscosity at 25 ° C. was measured. The results are shown in the “Viscosity (25 ° C., mPa · s)” column of Tables 1 and 2.

Further, each second agent was subjected to a storage test at 50 ° C. for one month, and the viscosity after the storage test was described in the column of "viscosity after storage (mPa · s)". Further, regarding the change in viscosity of the second agent in the storage test, the rate of change was calculated and the storage stability was evaluated (hereinafter, referred to as "second agent change rate"). The rate of change of the second agent was calculated by the following formula (1).
Second agent change rate (%) = {(viscosity after storage-viscosity before storage) / viscosity before storage} x 100 ... (1)

Referring to Table 1, in Examples 1-1 and 1-2, since the rate of change of the second agent is smaller than that of Comparative Example 1-1, (A-1) a surfactant having a sterol skeleton, or , (A-2) By containing a surfactant having a lipophilic group derived from lanolin, it is recognized that the change in viscosity of the second agent with time is suppressed and the storage stability is excellent. Furthermore, Examples 1-3 containing (A-1) a surfactant having a sterol skeleton and (A-2) a surfactant having a lipophilic group derived from lanolin have a second agent change rate. It is the smallest and has a particularly excellent effect on storage stability.

Referring to Table 2, Example 1-2 containing (B) nonionic surfactant is more stable in storage than Examples 1-4 and Examples 1-5 not containing (B) nonionic surfactant. It is recognized that it is excellent in sex.
In addition, although the viscosity of the anionic surfactant changed by the storage test, the action of lowering the viscosity was observed. It can be said that this action is a preferable tendency from the viewpoint of reducing the viscosity of the mixture.

[First agent]
(Examples 2-1 to 2-4)
By mixing each component shown in Table 3, the compositions of Examples 2-1 to 2-4 were prepared and used as the first agent of the hair treatment agent.
The first agent is produced, for example, as follows. First, each component other than the oxidation dye, ammonia, ammonium hydrogencarbonate, and L-ascorbic acid is placed in a container, dissolved and emulsified at 80 ° C, and cooled to 40 ° C. Then, an oxidation dye, ammonia, ammonium hydrogencarbonate, and L-ascorbic acid are added, and the total is adjusted with water to 100%. As the mixer, an "emulsification tester ET-SA type" (manufactured by Nikko Chemicals Co., Ltd.) was used.
Next, the viscosity immediately after production at 25 ° C. was measured and listed in the “Viscosity (25 ° C., mPa · s)” column of Table 3.

[Hair treatment agent]
(Examples 3-1 to 2-3, Comparative Example 3-1)
The hair treatment agents of Examples 3-1 to 3-2 and Comparative Example 3-1 were prepared by mixing the first agent and the second agent shown in Table 4. The mixing ratio was 1: 1 (first agent: second agent). In the mixing method, 30 g each of the first agent and the second agent were weighed, the first agent and the second agent were placed in a hair dyeing cup in this order, and mixed with a muddler or a hair dyeing brush.

Next, the viscosity of the hair treatment agent after mixing was measured and listed in the column of "Viscosity after mixing (25 ° C., mPa · s)" in Table 4.
Further, the effect of the second agent on reducing the viscosity of the mixture was evaluated by calculating the difference between the viscosity of the first agent and the viscosity of the mixture (hereinafter, referred to as "decreased viscosity"). The reduced viscosity was calculated by the following formula (2).
Decreased viscosity (mPa · s) = viscosity of first agent before mixing-viscosity of hair treatment agent after mixing ... (2)

Furthermore, according to the following evaluation criteria, for the hair treatment agent of each example, "the action of reducing the viscosity of the mixture by the second agent", "mixability", "operability by brush coating", "operability by hand coating". Was evaluated. The results are shown in Table 4.

<Viscosity lowering effect of the mixture by the second agent>
⊚: The reduced viscosity is 8,000 mPa · s or more.
◯: The reduced viscosity is 4,000 mPa · s or more and less than 8,000 mPa · s.
Δ: The reduced viscosity is 2,000 mPa · s or more and less than 4,000 mPa · s.
X: The reduced viscosity is less than 2,000 mPa · s.

<Evaluation method of mixing>
After mixing the first agent and the second agent in the hair dyeing cup as described above, the mixture was taken out from the hair dyeing cup and evaluated by visual observation according to the following criteria.
⊚: Smoothly and evenly mixed in the hair dye cup.
◯: The hair was mixed smoothly in the hair dyeing cup, and there was almost no lump (mixed defective product) that was not mixed.
Δ: It takes some time to mix, or some lumps (mixed defective products) are observed.
X: It takes time to mix, or a large amount of lumps (mixed defective products) are observed.

<Operability with brush coating>
60 g of the hair treatment agent obtained in each example was applied to an evaluation wig that had not been treated with a hair dyeing brush under 25 ° C. conditions, and the operability was evaluated by the following evaluation method.
◎: When an appropriate amount is taken with a brush, there is no sagging from the brush. Moreover, it is easy to stretch on the hair when applied to the hair, and it fits well on the hair.
◯: When an appropriate amount is taken with a brush, there is almost no sagging from the brush. Moreover, it is easy to stretch on the hair when applied to the hair, and it fits well on the hair.
Δ: When an appropriate amount is taken with a brush, there is some sagging from the brush. Alternatively, it is slightly difficult to stretch on the hair when applied to the hair, or it is slightly unfamiliar with the hair.
×: When an appropriate amount is taken with a brush, there is sagging from the brush. Alternatively, it is difficult to stretch on the hair when it is applied to the hair, or it does not fit well on the hair.

<Hand-painted operability>
60 g of the hair treatment agent obtained in each example was applied to an evaluation wig wet with hot water (40 ° C.) under 25 ° C. conditions while wearing gloves, and the operability was evaluated by the following evaluation method.
⊚: The extension on the hair and the adhesion to the hair are very excellent. Alternatively, it is easy to apply to the inside of the hair.
◯: Good elongation on hair and good adhesion to hair. Alternatively, it is easy to apply to the inside of the hair.
Δ: Elongation on the hair and adhesion to the hair are slightly inferior. Alternatively, it is a little difficult to apply to the inside of the hair.
X: Elongation on the hair and adhesion to the hair are inferior. Alternatively, it is difficult to apply to the inside of the hair.

Considering the evaluation results of Examples 3-1 to 3-2 and Comparative Example 3-1, the second agent is a surfactant having a (A-1) sterol skeleton, and (A-2) derived from lanolin. In Comparative Example 3-1 containing no surfactant having a lipophilic group, the “effect of reducing the viscosity of the mixture by the second agent” was low, and the hair treatment agent had poor operability by hand coating. The evaluation of "mixability" was also low.

(Examples 4-1 to 4-5)
Next, the hair treatment agents of Examples 4-1 to 4-5 were prepared by mixing the first agent and the second agent shown in Table 5, and evaluated in the same manner as in Example 3-1. In Examples 4-1 to 4-5, the mixing ratio of the first agent and the second agent is changed to "effect of reducing the viscosity of the mixture by the second agent", "mixability", and "operability in brush coating". , "Hand-painted operability" was evaluated.

With reference to Table 5, excellent effects were observed for each evaluation item in any of the mixing ratios (first agent: second agent) of 1: 0.2 to 1: 8.
Further, as a detailed examination, the larger the amount of the second agent (second agent / first agent) with respect to the amount of the first agent, the greater the viscosity lowering effect of the mixture by the second agent, and 0.5 is set. If it exceeds 1, an excellent effect is recognized, and if it exceeds 1, a particularly excellent effect is recognized.

(Examples 5-1 to 5-4)
Next, the hair treatment agents of Examples 5-1 to 5-4 were prepared by mixing the first agent and the second agent shown in Table 6, and in the same manner as in Example 3-1 The "viscosity lowering effect of the mixture by the agent", "miscibility", "operability by brush coating", and "operability by hand coating" were evaluated. Moreover, in Examples 5-1 to 5-4, the change with time of the viscosity after mixing was evaluated.

Regarding the change with time of the viscosity after mixing, the viscosity was measured after 60 minutes at 25 ° C. after mixing the first agent and the second agent, and the rate of change with respect to the viscosity immediately after mixing was calculated (hereinafter, "change after mixing"). Rate ".). The rate of change after mixing was calculated by the following equation (3).
Rate of change after mixing (%) = {(Viscosity 60 minutes after mixing-Viscosity immediately after mixing) / Viscosity immediately after mixing} x 100 ... (3)

In Examples 5-1 to 5-4, the actions of sulfates and carbonates contained in the first agent were examined. Paratorylene diamine sulfate was used as the source of sulfate, and ammonium hydrogen carbonate was used as the source of carbonate. In addition, when the first agent contains a sulfate or a carbonate, the effect of increasing the viscosity lowering effect of the mixture by the second agent is recognized.
Moreover, when carbonate was contained, the absolute value of the rate of change after mixing decreased. That is, it can be said that the inclusion of the carbonate reduces the change in viscosity of the mixture over time.
Further, referring to Table 6, the first agent containing carbonate and not containing sulfate is found to have a particularly excellent effect in the rate of change after mixing.

(Examples 6-1 to 6-3)
Next, the hair treatment agents of Examples 6-1 to 6-3 were prepared by mixing the first agent and the second agent shown in Table 7, and in the same manner as in Example 3-1 "second agent". The "viscosity lowering effect of the mixture by the agent", "miscibility", "operability by brush coating", and "operability by hand coating" were evaluated. Moreover, in Examples 6-1 to 6-3, the feel of the hair when applied to the hair was evaluated. The feel of the hair was evaluated according to the following criteria.

<Feeling of hair>
60 g of the hair treatment agent obtained in each example was applied to the evaluation wig using a brush, and after 20 minutes, the hair treatment agent was washed away. After that, shampoo (Promaster Color Care Shampoo manufactured by Hoyu Co., Ltd.) was applied twice, and treatment (Promaster Color Care Hair Treatment manufactured by Hoyu Co., Ltd.) was applied once. Then, for the hair dried with warm air, the total from rinsing to drying was evaluated by the following evaluation method.
◎: It is difficult to feel the hardness and squeak of the hair from the time of plain rinsing of the hair treatment agent to after drying, and it is easy to pass by fingers.
◯: A little hardness is felt when shampooing, but the hardness felt after treatment and drying is eliminated.
Δ: I feel a little hardness even during plain rinse, and it is refreshing. In addition, the hardness felt during shampoo is slightly softened after treatment, but remains even after drying.
×: It is hard from the time of plain rinse, and it feels more hard and squeaky with shampoo. Even after drying, the hardness and squeaky feeling remain.

In Examples 6-1 to 6-3, the actions of various surfactants in a hair treatment agent in which the first agent and the second agent were mixed were examined. All of the surfactants were found to have excellent effects on "viscosity lowering effect of the mixture by the second agent", "miscibility", "operability by brush coating", and "operability by hand coating". ..
In addition, Examples 6-1 and 6-2 containing a cationic surfactant were found to have a better effect on the feel of hair than Examples 6-3 not containing a cationic surfactant.

The use of the oxidant-containing composition of the present invention is not particularly limited, and for example, it can be mixed with a highly viscous composition and used as an oxidant-containing composition for lowering the viscosity of the mixture.
It can also be used as a method for suppressing a change in viscosity of the oxidizing agent-containing composition over time.

The oxidant-containing composition of the present invention is preferably used as a hair treatment agent such as a multi-agent oxidative hair dye, a bleaching agent, and a bleaching agent. The hair may be human hair, beard, eyebrows, shin hair, or other body hair, or animal body hair such as a pet.

The application of the method of using the hair treatment agent of the present invention is not particularly limited, but it can be suitably used when, for example, it is desired to suppress the tensile stress applied to the hair during a coating operation such as brush coating. Specifically, it can be used as a method of using a hair treatment agent on dyed hair that is prone to damage. In addition, since it has excellent applicability and can be suitably used for both new hair and dyed hair, it can be applied uniformly from the root to the tip of the hair using the same hair treatment agent. Can also be used.
In addition, it can be used as a method for easily mixing the first agent and the second agent in the preparation of the hair treatment agent.

The method of using the hair treatment agent of the present invention is used in a beauty salon, a barber shop, and the like. It can also be used as a method of treating hair by the subject himself / herself, such as self-hair coloring.

Claims (3)

In an oxidizing agent-containing composition used as a second agent of a multi-agent hair treatment agent,
It is an emulsion and
(A-1) oxidizing agent containing composition characterized by containing a surfactant having a sterol skeleton. In an oxidizing agent-containing composition used as a second agent of a multi-agent hair treatment agent,
And a viscosity at 25 ° C. is 5 000mPa · s or less,
(A-1) oxidizing agent containing composition characterized by containing a surfactant having a sterol skeleton. In addition
(A-2) Surfactant having a lipophilic group derived from lanolin,
(B) Nonionic surfactant (excluding the above-mentioned (A-1) surfactant having a sterol skeleton and the above (A-2) surfactant having a lipophilic group derived from lanolin), or.
(C) The oxidizing agent-containing composition according to claim 1 or 2 , which contains a cationic surfactant.