JP5328435B2 - Oxidative hair dye - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hair-treating agent easily mixable, without scattering the first agent on mixing a first agent with a second agent, also even by using a regulated amount of hydrogen peroxide, more bleaching the hair, and also in the case of being used as a form of an acid hair dyestuff, excellent in preservation property of the acid dyestuff, and also even by using the regulated amount of the hydrogen peroxide, dyeing the hair in a bright color tone. <P>SOLUTION: This hair-treating agent includes a first agent containing an alkali agent, preferably capsules encapsulating a solid alkali agent, and a second agent containing hydrogen peroxide and preferably having fluidity. In the first agent, it is preferable to encapsulate further an oily component, and as the capsules, soft-capsulization is preferable. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to a hair treatment agent. Specifically, the present invention relates to a hair treatment agent used for a hair bleaching agent, an oxidative hair dye, or the like, comprising a first encapsulated agent and a second agent containing hydrogen peroxide. In addition, the room temperature in this invention means the temperature range under 1-30 degreeC atmosphere.

  In general, hair treatment agents such as hair bleaching agents and oxidative hair dyes are mainly of a two-component type comprising a first agent containing an alkaline agent and a second agent containing hydrogen peroxide. The two-component hair bleaching agent mixes the first agent and the second agent at the time of use, and decolorizes the hair by oxidizing and decomposing melanin pigment in the hair. Moreover, the oxidative hair dye which mix | blended the oxidative dye with the 1st agent oxidizes and decomposes | disassembles a melanin pigment, and oxidatively polymerizes an oxidative dye in hair and dye | stains hair to a desired color.

  Therefore, when it is desired to decolorize the hair or to dye the hair to a lighter color, it is necessary to increase the amount of hydrogen peroxide in order to sufficiently decompose the melanin pigment.

  However, the amount of hydrogen peroxide to be blended in the second agent is restricted to an upper limit of 6 mass% by the Pharmaceutical Affairs Law in Japan. Also in European countries, the upper limit is 12 mass% by the EU cosmetics directive Annex III. Therefore, there exists a problem that the compounding quantity of hydrogen peroxide cannot be mix | blended more than regulation amount.

  In order to solve such problems and to further decolorize hair, a hair decoloring agent is known which contains an accelerator such as persulfate in the first agent or is used as the third agent (for example, Patent Documents). 1-3).

  However, if such a persulfate having a strong oxidizing power is used as an oxidative hair dye, the oxidative dye may be oxidized before penetrating into the hair, or the polymer of the oxidized dye may be decomposed. There is a problem that the hair cannot be dyed sufficiently. Moreover, since such a 1st agent and a 3rd agent are normally used with a powdery dosage form, there also exists a problem that powder will disperse at the time of mixing with a 2nd agent.

JP 2006-169203 A JP 2004-35501 A JP-A-4-279514

  The present invention has been made in view of the above-described prior art, and when the first agent and the second agent are mixed, the first agent is not scattered and can be easily mixed. It is an object of the present invention to provide a hair treatment agent that can decolorize hair even if the amount is regulated. In addition, when used in the form of an oxidative hair dye, a hair treatment that is excellent in the storage stability of oxidative dyes and that can dye hair in a light color tone even with a regulated amount of hydrogen peroxide. It is an object to provide an agent.

That is, the present invention
[1] A hair treatment agent comprising a first agent comprising a capsule containing an alkali agent and a second agent comprising hydrogen peroxide,
[2] The hair treatment agent according to [1], further comprising an oil component encapsulated in a capsule,
[3] The hair treatment agent according to [2], wherein the oily component is a liquid oily component at room temperature,
[4] The hair treatment agent according to [3], wherein the oily component that is liquid at room temperature is a hydrocarbon oil and / or a silicone oil,
[5] The hair treatment agent according to any one of [1] to [4], wherein the alkaline agent is a solid alkaline agent,
[6] The solid alkaline agent is one selected from the group consisting of carbonates, bicarbonates, tartrate, citrate, phosphate, diphosphate, silicate, metasilicate, and acetate. The hair treatment agent according to [5] above,
[7] The hair treatment agent according to any one of [1] to [6], wherein the capsule wall membrane is gelatin and / or agar,
[8] The hair treatment agent according to any one of the above [[1] to [7], wherein the component contained in the capsule does not substantially contain water,
[9] The hair treatment agent according to any one of [1] to [8], wherein the capsule is a soft capsule, and [10] the second agent is a second agent having fluidity. The hair treatment agent according to any one of the above [1] to [9].

  The hair treatment agent of the present invention can be easily mixed without mixing the first agent when the first agent and the second agent are mixed, and has a regulated amount of hydrogen peroxide. Also has the effect of being able to decolorize the hair more. Further, when the hair treatment agent of the present invention is used in the form of an oxidative hair dye, the oxidative dye is excellent in storage stability, and even if the amount of hydrogen peroxide is regulated, the hair is dyed in a light color tone. It has the effect of being able to hair.

  The hair treatment agent of this invention is comprised from the 1st agent which consists of a capsule which included the alkaline agent, and the 2nd agent containing hydrogen peroxide. First, the 1st agent of this invention is demonstrated.

  The alkali agent used for this invention will not be specifically limited if the effect of this invention is exhibited, An inorganic alkali agent and an organic alkali agent can be used. Examples of the inorganic alkaline agent include carbonates such as sodium carbonate, potassium carbonate and ammonium carbonate; hydrogen carbonates such as sodium hydrogen carbonate, potassium hydrogen carbonate and ammonium hydrogen carbonate; tartrate salts such as potassium sodium tartrate; trisodium citrate Citrates such as tripotassium citrate; phosphates such as trisodium phosphate and tripotassium phosphate; pyrophosphates such as sodium pyrophosphate; silicates such as sodium silicate; metasilicates such as sodium metasilicate Acid salts; acetates such as sodium acetate, potassium acetate and calcium acetate can be exemplified. Examples of the organic alkali agent include monoethanolamine, diethanolamine, triethanolamine, isopropanolamine, 2-amino-2-methyl-1-propanol, 2-amino-2-methyl-1,3-propanediol, etc. can do. Among these, it is preferable to use a solid alkali agent such as carbonate, hydrogen carbonate, phosphate, silicate, etc. from the viewpoint of the effect of raising the pH, and from the viewpoint of dispersibility in the second agent, it is powdery. More preferably, it is used. In addition, these alkali agents may be used individually by 1 type, and may mix and use 2 or more types suitably.

  The content of the alkaline agent in the hair treatment agent is not particularly limited as long as the effect of the present invention is exhibited, but from the viewpoint of the depigmenting power of the hair, an amount that is 1% by mass or more when mixed with the second agent is used. The amount is preferably 3% by mass or more. In addition, from the viewpoint of safety and skin irritation, it is preferable to use an amount that is 20% by mass or less, more preferably 15% by mass or less when mixed with the second agent. From these things, content in the hair treatment agent of an alkaline agent becomes like this. Preferably it is 1-20 mass%, More preferably, it is 3-15 mass%.

  When the hair treatment agent of the present invention is used as a hair bleaching agent, as described above, the alkaline agent constitutes the first agent as an essential component, but when used as an oxidative hair dye, in the capsule of the first agent. Further, an oxidation dye is blended.

  The oxidative dye in the present invention means both a dye precursor that develops color by its own oxidative polymerization and a coupler that has various hues by reaction with the dye precursor. Examples of the oxidative dye precursor that can be used in the present invention include phenylenediamines, aminophenols, diaminopyridines, and salts thereof such as hydrochlorides and sulfates. Specifically, p-phenylenediamine, toluene-2,5-diamine, toluene-3,4-diamine, 2,5-diaminoanisole, N-phenyl-p-phenylenediamine, N-methyl-p-phenylenediamine N, N-dimethyl-p-phenylenediamine, 6-methoxy-3-methyl-p-phenylenediamine, N, N-diethyl-2-methyl-p-phenylenediamine, N-ethyl-N- (hydroxyethyl) -P-phenylenediamine, N- (2-hydroxypropyl) -p-phenylenediamine, 2-chloro-6-methyl-p-phenylenediamine, 2-chloro-p-phenylenediamine, N, N-bis- (2 -Hydroxyethyl) -p-phenylenediamine, 2,6-dichloro-p-phenylenediamine, 2-chloro-6-butyl Phenylenediamines such as mu-p-phenylenediamine; paraaminophenol, orthoaminophenol, paramethylaminophenol, 2,4-diaminophenol, 5-aminosalicylic acid, 2-methyl-4-aminophenol, 3-methyl-4 -Aminophenol, 2,6-dimethyl-4-aminophenol, 3,5-dimethyl-4-aminophenol, 2,3-dimethyl-4-aminophenol, 2,5-dimethyl-4-aminophenol, 2- Examples thereof include aminophenols such as chloro-4-aminophenol and 3-chloro-4-aminophenol; diaminopyridines such as 2,5-diaminopyridine, and salts thereof.

  Examples of the coupler include resorcin, m-aminophenol, m-phenylenediamine, 2,4-diaminophenoxyethanol, 5-amino-o-cresol, 2-methyl-5-hydroxyethylaminophenol, and 2,6-diaminopyridine. , Catechol, pyrogallol, α-naphthol, gallic acid, tannic acid and the like and salts thereof.

  In the present invention, among these oxidation dyes, when used together with a solid powdery alkaline agent, it is preferable to use a solid oxidation dye from the viewpoint of mixing properties, and from the viewpoint of dispersibility in the second agent, More preferably, it is used in the form.

  The content of the oxidative dye in the hair treatment agent is not particularly limited as long as the effect of the present invention is exhibited. However, from the viewpoint of dyeability to hair, the content becomes 0.1% by mass or more when mixed with the second agent. The amount is preferably used, and more preferably 0.2% by mass or more. From the viewpoint of skin irritation, it is preferable to use an amount that is 2% by mass or less when mixed with the second agent, and an amount that is 1.5% by mass or less is more preferable. From these things, content in the hair treatment agent of an oxidation dye becomes like this. Preferably it is 0.1-2 mass%, More preferably, it is 0.2-1.5 mass%.

  In the capsule of the first agent of the present invention, an oily component can be further encapsulated, and it is preferable to disperse the alkali agent or the alkali agent and an oxidation dye in the oily component. Thereby, there exists an advantage that the dispersibility of an alkali agent or an alkali agent and an oxidation dye becomes more favorable at the time of mixing with a 2nd agent.

  The oily component that can be used is not particularly limited as long as it can be used as a dispersion medium for an alkaline agent. For example, oils and fats such as olive oil, camellia oil, macadamia nut oil, and avocado oil; Waxes such as liquid paraffin, paraffin, petrolatum, ceresin, microcrystalline wax, squalene, squalane, etc .; methylpolysiloxane, methylphenylpolysiloxane, methylcyclopolysiloxane, octamethylcyclotetrasiloxane, octamethylcyclopentasiloxane , Decamethylcyclopentasiloxane, methylhydrogenpolysiloxane, aminoethylaminopropylmethylsiloxane / dimethylsiloxane copolymer, highly polymerized methylpolysiloxane, poly Silicones such as xylene / methylpolysiloxane copolymer; isopropyl myristate, 2-octyldodecyl myristate, cetyl 2-ethylhexanoate, 2-ethylhexyl palmitate, dipentyl glycol di-2-ethylhexanoate, tri- Glycerol 2-ethylhexanoate, 2-octyldodecyl oleate, glycerol triisostearate, glycerol tri-2-ethylhexanoate, 2-octyldodecyl oleate, diisostearyl malate, glycerol triisostearate, 2-ethylhexane Fatty acid esters such as acid diglycerides; fatty acid triglyceride esters such as glyceryl tricaprylate, glyceryl tri-2-ethylhexanoate, glyceryl triundecylate, and glyceryl tristearate Higher alcohols such as cetyl alcohol, stearyl alcohol, isostearyl alcohol, 2-octyldodecanol and oleyl alcohol; higher fatty acids such as lauric acid, myristic acid, palmitic acid, stearic acid, isostearic acid and oleic acid .

  Among these, from the viewpoint of dispersibility of the alkaline agent, it is preferable to use an oily component that is liquid at room temperature. From the viewpoint of stability, hydrocarbon oils such as liquid paraffin, squalene, and squalane; methylpolysiloxane, methylphenylpolysiloxane, It is more preferable to use silicone oils such as methylcyclopolysiloxane, octamethylcyclotetrasiloxane, octamethylcyclopentasiloxane, decamethylcyclopentasiloxane, methylhydrogenpolysiloxane, and the like. In addition, these oily components may be used individually by 1 type, and may mix and use 2 or more types suitably.

  When the hair treatment agent of the present invention is used as a hair bleaching agent, the content of the oil component in the capsule of the first agent is not particularly limited as long as the effect of the present invention is exhibited, but from the viewpoint of dispersibility of the alkaline agent, 0.5 mass times or more of the alkali agent is preferable, and 0.8 mass times or more is more preferable. Moreover, 10 mass times or less of an alkaline agent is preferable from a viewpoint of the persistence to hair and a washability, and 5 mass times or less are more preferable. From these things, content of the oil-based component in a capsule becomes like this. Preferably it is 0.5-10 mass times of an alkaline agent, More preferably, it is 0.8-5 mass times.

  When the hair treatment agent of the present invention is used as an oxidative hair dye, the content of the oil component in the capsule of the first agent is not particularly limited as long as the effect of the present invention is exhibited, but the dispersibility of the alkali agent and the oxidative dye In view of the above, 0.5 mass times or more of the total amount of the alkali agent and the oxidation dye is preferable, and 0.8 mass times or more is more preferable. Further, from the viewpoints of persistence to hair and detergency, it is preferably 10 times by mass or less and more preferably 5 times by mass or less of the total amount of the alkaline agent and the oxidation dye. From these things, content of the oil-based component in a capsule becomes like this. Preferably it is 0.5-10 mass times of the total amount of an alkaline agent and an oxidation dye, More preferably, it is 0.8-5 mass times.

  In the first agent according to the present invention, as long as the effects of the object of the present invention are not impaired, sorbitan fatty acid ester, glycerin fatty acid ester, and alkylene oxide adducts thereof, polyglycerin fatty acid ester, in addition to the above-described components Nonionic surfactants such as polyoxyalkylene alkyl ether, polyoxyalkylene fatty acid ester, polyoxyethylene hydrogenated castor oil, polyoxyethylene lanolin, polyoxyethylene reduced lanolin; higher fatty acid soap, alkyl sulfate ester salt, alkyl phosphoric acid Anionic surfactants such as salts, polyoxyethylene alkyl ether sulfates, alkyl ether phosphates, alkyl ether carboxylates, acylmethyl taurates, alkylsulfosuccinic acids and salts thereof; alkyl glycine salts, cals Glycine-type amphoteric surfactants such as xymethylglycine salt and N-acylaminoethyl-N-2-hydroxyethylglycine salt, and aminopropionic acid-type amphoteric surfactants such as alkylaminopropionate and alkyliminodipropionate Amphoteric surfactants such as aminoacetic acid betaine-type amphoteric surfactants such as alkyldimethylaminoacetic acid betaine and fatty acid amidopropyldimethylaminoacetic acid betaine; and sulfobetaine-type amphoteric surfactants such as alkylhydroxysulfobetaine; lauryltrimethylammonium chloride; Alkylamine salts such as stearyltrimethylammonium chloride and distearyldimethylammonium chloride; cuts of fatty acid amidoamines such as myristic acid dimethylaminoethylamide and stearic acid diethylaminopropylamide Emissions surfactant; ascorbic acid, antioxidants such as erythorbic acid, thickeners, chelating agents, dyes, can be appropriately blended dispersant.

  Thus, the capsule containing the contents of the first agent is not particularly limited as long as it can be introduced into the second agent described later, and examples thereof include mini capsules such as soft capsules and hard capsules, microcapsules, and nanocapsules.

  The manufacturing method of a capsule is not specifically limited, It can encapsulate by a known method. For example, in the case of microencapsulation or nanoencapsulation, an interfacial polycondensation method, a coacervation method, an interfacial precipitation method, a vacuum deposition film method, a spray drying method, and the like can be given. In the case of soft encapsulation, a punching method, a dropping method, or the like can be given, and in the case of hard encapsulation, an immersion method or the like can be raised.

  In addition, since the powdery component or the liquid component in which the powder is dispersed can be easily encapsulated, mini-encapsulation is preferable, and from the viewpoint of disintegration in an aqueous medium, soft encapsulation is more preferable. When soft capsules are produced, not only spherical capsules but also capsules of various shapes such as triangles, diamonds, fishes, bottles and the like are obtained. By making capsules of various shapes, there is an advantage that it is possible to provide the user with fun when using the hair treatment agent.

  In addition, in the case of soft encapsulation, from the viewpoint of dispersibility and disintegration of the capsule in the second agent, the capsule preferably has a diameter of about 0.1 mm to 30 mm, and the diameter is about 0.5 mm to 25 mm. More preferably.

  The film thickness of the wall membrane is preferably about 50 to 500 μm from the viewpoint of capsule strength and disintegration in the second agent.

  When the contents of the first agent are softly encapsulated as an inclusion substance, the capsule wall membrane is not particularly limited as long as it can be encapsulated, and examples thereof include gelatin, agar, carrageenan, and starch. Of these, gelatin, agar and the like are preferably used from the viewpoint of easy disintegration in the aqueous medium of the second agent.

  In addition, since the material of the capsule wall membrane is preferably a material that easily disintegrates only in an aqueous medium, it is preferable that the component contained in the capsule in the first agent does not substantially contain water. In the present invention, “substantially does not contain water” means “not to contain water separately” and does not exclude the addition of a trace amount of water contained in each compounding component.

  Next, the second agent of the present invention will be described. The second agent according to the present invention contains hydrogen peroxide as an essential component.

  The content of hydrogen peroxide in the second agent is not particularly limited as long as the effect of the present invention is exhibited, but from the viewpoint of decolorization, 0.01% by mass or more is preferable, and 0.1% by mass or more is more preferable. . Moreover, from a viewpoint of preventing skin irritation and hair damage, 12 mass% or less is preferable and 6 mass% or less is more preferable. From these things, it is preferable that content of the oxidizing agent in a 2nd agent shall be 0.01-12 mass%, More preferably, it is good to set it as 0.1-6 mass%.

  The second agent of the present invention preferably contains water and an aqueous medium as a dispersion medium from the viewpoint of easily disintegrating the capsule of the first agent. The water used is usually purified water, and may be ion exchange water, tap water, or the like.

  The content of water in the second agent is not particularly limited as long as the effects of the present invention are exhibited, but from the viewpoint of facilitating the disintegration of the capsule of the first agent, 50% by mass or more is preferable, and 80% by mass or more is preferable. More preferred. In consideration of blending only hydrogen peroxide with the second agent, it is preferably 99.99% by mass or less, and more preferably 99.9% by mass or less. From these things, content of the water in a 2nd agent becomes like this. Preferably it is 50-99.99 mass%, More preferably, it is 80-99.9 mass%.

  The second agent of the present invention may contain an oxidizing agent stabilizer. For example, phenacetin, hydroxyethane diphosphonic acid and the like can be exemplified.

  In addition, the second agent according to the present invention includes, in addition to the above components, lower alcohols such as ethanol and isopropanol; lauryl alcohol, myristyl alcohol, cetyl alcohol, stearyl, as long as the effects of the present invention are not impaired. Higher alcohols such as alcohol; higher fatty acids such as lauric acid, myristic acid, stearic acid and oleic acid; hydrocarbons such as liquid paraffin, liquid isoparaffin and squalane; esters such as myristyl myristate, isostearyl myristate and stearyl stearate; Animal and vegetable oils such as avocado oil, olive oil, safflower oil, hydrogenated oil; polyhydric alcohols such as polyethylene glycol, glycerin, polyglycerin, 1,3-butylene glycol, 1,2-pentanediol, 1,2-octanediol; Seo Nonionic surfactants such as bitane fatty acid esters, glycerin fatty acid esters and their alkylene oxide adducts, polyglycerin fatty acid esters, polyoxyalkylene alkyl ethers, polyoxyalkylene fatty acid esters, polyoxyethylene hydrogenated castor oil, polyoxyethylene lanolin Agents: Anions such as higher fatty acid soaps, alkyl sulfates, alkyl phosphates, polyoxyethylene alkyl ether sulfates, alkyl ether phosphates, alkyl ether carboxylates, acylmethyl taurates, alkyl sulfosuccinic acids and their salts Glycine type amphoteric surfactants such as alkyl glycine salts, carboxymethyl glycine salts, N-acylaminoethyl-N-2-hydroxyethyl glycine salts, alkyl amines Aminopropionic acid type amphoteric surfactants such as nopropionate and alkyliminodipropionate, aminoacetic acid betaine type amphoteric surfactants such as alkyldimethylaminoacetic acid betaine and fatty acid amidopropyldimethylaminoacetic acid betaine, alkylhydroxysulfobetaine Amphoteric surfactants such as sulfobetaine-type amphoteric surfactants such as; alkylamine salts such as lauryltrimethylammonium chloride, stearyltrimethylammonium chloride, distearyldimethylammonium chloride; dimethylaminoethylamide myristate, diethylaminopropylamide stearate, etc. Cationic surfactants such as fatty acid amidoamines; thickeners, colorants, fragrances and the like can be appropriately contained depending on the purpose.

  As the dosage form of the second agent according to the present invention, it can be used in various dosage forms such as liquid, gel, cream, etc. From the viewpoint of easily dispersing the capsule of the first agent, the liquid, gel It is preferable that the dosage form has fluidity such as the above.

  When using the hair treatment agent of the present invention, the first agent and the second agent may be mixed and used at the time of use, but preferably encapsulated in an applicator container filled with a fluid second agent. The prepared first agent is added, the container is sealed, and shaken strongly up and down. Thereby, the capsule of the 1st agent can be disintegrated by the dispersion medium in the 2nd agent, and the 1st agent and the 2nd agent can be mixed easily. In addition, when using a minicapsule for the first agent, the alkali agent and the oxidative hair dye need only be mixed in the predetermined amount, and the number of minicapsules used for the first agent may be one or more than two. It is also good.

  EXAMPLES Hereinafter, although this invention is demonstrated further in detail based on an Example, this invention is not limited only to this Example. The blending amount is mass% unless otherwise specified.

(Production Example 1: Hair bleaching agent “first agent A”)
Gelatin 85% by mass, starch 10% by mass and glycerin 5% by mass were dissolved by heating and homogenized, and then molded into a gel sheet of about 0.3 mm to obtain a soft capsule wall membrane. On the other hand, a suspension obtained by stirring and homogenizing powders and oils having the following composition was prepared by a conventional method to obtain capsule contents. Using these, spherical soft capsules having a diameter of about 2.5 cm (8 g per tablet) were prepared by a punching method. The obtained soft capsule was designated as “first agent A” as a hair bleaching agent. The weight of the capsule contents is 7.7 g.

(1) Sodium silicate 20.0
(2) Magnesium carbonate 15.0
(3) Sodium carbonate 5.0
(4) Sodium chloride 3.0
(5) Polyoxyethylene (50) lanolin 5.0
(6) Methyl polysiloxane (20cs) balance
Total 100.0

(Production Example 2: Hair bleaching agent “first agent B”)
The powdery hair bleaching agent 1st agent (following composition) containing the general booster (accelerator) was prepared by the conventional method. The obtained 1st agent was made into the hair decoloring agent "1st agent B".

(1) Sodium silicate 3.0
(2) Magnesium carbonate 10.0
(3) Ammonium persulfate 30.0
(4) Potassium persulfate 30.0
(5) Sodium metasilicate 15.0
(6) Sodium chloride 10.0
(7) Talc 2.0
Total 100.0

(Production Example 3: Hair bleaching agent “first agent C”)
The creamy 1st agent (following composition) of a general two-component hair bleach was prepared by the conventional method. The obtained 1st agent was made into the hair decoloring agent "1st agent C".

(1) 28% ammonia water 10.0
(2) Dicetyl phosphate 1.0
(3) Polyoxyethylene (40) cetyl ether 1.0
(4) Polyoxyethylene (20) cetyl ether 1.0
(5) Methyl polysiloxane 0.5
(6) Cetyl alcohol 5.0
(7) Polyethylene glycol 20000 1.0
(8) Balance of purified water
Total 100.0

(Production Example 4: Oxidative hair dye “first agent D”)
Gelatin 85% by mass, starch 10% by mass and glycerin 5% by mass were dissolved by heating and homogenized, and then molded into a gel sheet of about 0.3 mm to obtain a soft capsule wall membrane. On the other hand, a suspension obtained by stirring and homogenizing powders and oils having the following composition was prepared by a conventional method to obtain capsule contents. Using these, spherical soft capsules having a diameter of about 2.5 cm (8 g per tablet) were prepared by a punching method. The obtained soft capsule was designated as “first agent D” of the oxidative hair dye. The weight of the capsule contents is 7.7 g.

(1) Sodium silicate 20.0
(2) Magnesium carbonate 15.0
(3) Sodium carbonate 5.0
(4) Toluene sulfate 2,5-diamine 1.0
(5) Paraaminophenol 1.0
(6) 5-aminoorthocresol 2.0
(7) Polyoxyethylene (50) lanolin 5.0
(8) Methyl polysiloxane (20cs) balance
Total 100.0

(Production Example 5: Oxidative hair dye “first agent E”)
A general two-component oxidative hair dye cream-like first agent (the following composition) was prepared by a conventional method. The obtained first agent was designated as an oxidation hair dye “first agent E”.

(1) 28% ammonia water 10.0
(2) Dicetyl phosphate 1.0
(3) Polyoxyethylene (40) cetyl ether 1.0
(4) Polyoxyethylene (20) cetyl ether 1.0
(5) Methyl polysiloxane 0.5
(6) Cetyl alcohol 5.0
(7) Toluene sulfate 2,5-diamine 0.3
(8) Paraaminophenol 0.3
(9) 5-Aminoorthocresol 0.6
(10) Purified water balance
Total 100.0

(Production Example 6: Hair Treatment Agent Second Agent A)
The liquid 2nd agent (following composition) used for a general two-component hair bleaching agent or two-component oxidative hair dye was prepared by the conventional method. The second agent of the obtained hair treatment agent was designated as a hair treatment agent “second agent A”.

(1) Hydrogen peroxide solution (35%) 16.7
(2) Hydroxyethanediphosphonic acid 0.1
(3) Balance of purified water
Total 100.0

[Experimental Example 1: Preparation of hair bleaching agent sample]
The following examination was carried out in the form of a hair bleaching agent. That is, one soft capsule (8 g) of the hair bleaching agent “first agent A” is put into 70 g of the hair treatment agent “second agent A” filled in the applicator container, and the container is sealed 30 times up and down. Shake up and down. This hair treatment agent was designated “Example 1”.
1 part by weight of the hair bleaching agent “First Agent B” is added to 4 parts by weight of the hair treatment agent “Second Agent A” filled in the applicator container, and the container is sealed and shaken up and down 30 times. That ’s it. This hair treatment agent was designated “Comparative Example 1”.
In addition, 1 part by weight of the hair bleaching agent “First Agent C” is added to 2 parts by weight of the hair treatment agent “Second Agent A” filled in the applicator container, and the container is sealed up and down 30 times. Shake to. This hair treatment agent was designated as “Comparative Standard 1”.

(Test Example 1: Evaluation of usability)
When the first agent was introduced, the degree to which the first agent was scattered was compared with the comparative standard product 1 and evaluated based on the following evaluation criteria. Moreover, the ease of mixing at the time of shaking was evaluated based on the following evaluation criteria. The results are shown in Table 1.

<Evaluation criteria for dance>
○: As in Comparative Standard Product 1, there is no scattering of the first agent.
(Triangle | delta): Compared with the comparison standard product 1, there is slight scattering of the 1st agent.
X: Compared with the comparative standard product 1, there is scattering of the first agent.

<Mixability evaluation criteria>
◯: Same as the comparative standard product 1, mixed uniformly.
(Triangle | delta): Compared with the comparison standard goods 1, it is not mixed slightly uniformly.
X: Not uniformly mixed as compared with Comparative Standard Product 1.

(Test Example 2: Decolorization evaluation)
2 g of each hair treatment agent obtained by mixing in Test Example 1 was uniformly applied to a black human hair bundle having a weight of 1 g and a length of 10 cm, and was left in an atmosphere at 30 ° C. for 30 minutes. Then, it washed with water and dried the hair | bristle bundle using the drier, and obtained the decoloring hair | bristle bundle. The degree of decolorization of each of the obtained decolorized hair bundles was adjacently compared with the comparative standard product 1 and evaluated based on the following evaluation criteria. The results are shown in Table 1.

<Evaluation criteria>
○: The hair is clearly decolorized from the comparative standard product 1.
(Triangle | delta): The hair is decolored slightly from the comparison reference product 1.
X: The hair is decolored as in the case of the comparative standard product 1.

  From the results in Table 1, when the hair treatment agent of the present invention is used in the form of a hair bleaching agent, the first agent does not splash when the first agent is added, and the first agent and the second agent can be easily mixed. I understand. In addition, it is superior to general two-component hair bleaching agent (Comparative Standard Product 1) and has the same level of decolorizing power as or more than when a promoter is used without using a strong oxidizing agent (accelerator) such as persulfate. It can be seen that the hair decoloring power is exhibited.

[Experimental Example 2: Preparation of oxidation hair dye sample]
The following examination was implemented in the aspect of oxidation hair dye. That is, one soft capsule (8 g) of the oxidative hair dye “first agent D” is put into 70 g of the hair treatment agent “second agent A” filled in the applicator container, and the container is sealed 30 up and down. Shake up and down times. This hair treatment agent was designated “Example 2”.
Also, for 2 parts by mass of the hair treatment agent “Second Agent A” filled in the applicator container, 1 part by mass of the hair dye “First Agent E” is charged, the container is sealed, and 30 times up and down. Shake up and down. This hair treatment agent was designated as “Comparative Standard Product 2”.

(Test Example 3: Dye stability)
“First Agent D” or “First Agent E” is sealed in a glass bottle with a polypropylene cap and a polyethylene stopper and stored in a constant temperature and humidity chamber at a temperature of 40 ° C. and a humidity of 60% for 30 days. Thereafter, the degree of coloring of the dye was visually observed and evaluated based on the following evaluation criteria. The results of “First Agent D” are shown in Table 2. In addition, the color development of the dye was recognized for the “first agent E”, and the dye stability evaluation was “x” of the following evaluation criteria.

<Evaluation criteria>
○: Color development of the dye is not recognized.
Δ: Dye coloring is slightly observed.
X: Color development of the dye is observed.

(Test Example 4: Evaluation of usability)
The ease of mixing during shaking of the first agent and the second agent in Experimental Example 2 was evaluated in comparison with Comparative Standard Product 2 as in Test Example 1. The results are shown in Table 2.

(Test Example 5: Evaluation of dyeing lightness)
2 g of each hair treatment agent obtained by mixing in Test Example 4 was uniformly applied to a black human hair bundle having a weight of 1 g and a length of 10 cm, and was left in an atmosphere at 30 ° C. for 30 minutes. Thereafter, the hair bundle was washed with water and dried with a dryer to obtain a dyed hair bundle dyed red. The degree of color tone (lightness) of each of the obtained hair bundles was compared with that of Comparative Standard Product 2 and evaluated based on the following evaluation criteria. The results are shown in Table 2.

<Evaluation criteria>
○: The lightness of the hair is clearly higher than that of Comparative Standard Product 2.
Δ: Brightness of hair is slightly higher than that of Comparative Standard Product 2.
X: The lightness of the hair is the same as that of the comparative standard product 2.

  From the results in Table 2, it can be seen that when the hair treatment agent of the present invention is used in the form of an oxidative hair dye, the first agent is excellent in dye stability. Moreover, it turns out that the hair treatment agent of this invention can mix a 1st agent and a 2nd agent easily. Furthermore, it can be seen that it can be dyed in a much brighter color tone than a general two-component hair treatment agent (Comparative Standard Product 2).

Claims (8)

Ri Do from a first agent consisting of capsules containing an alkali agent, a second agent containing hydrogen peroxide,
A solid in which the alkaline agent is at least one selected from the group consisting of carbonate, bicarbonate, tartrate, citrate, phosphate, diphosphate, silicate, metasilicate, and acetate. Oxidative hair dye which is an alkaline agent . Furthermore, the oxidative hair dye of Claim 1 formed by encapsulating an oil-based component in a capsule. The oxidative hair dye according to claim 2, wherein the oil component is an oil component which is liquid at room temperature. The oxidative hair dye according to claim 3, wherein the oily component which is liquid at room temperature is a hydrocarbon oil and / or a silicone oil. The oxidative hair dye according to any one of claims 1 to 4 , wherein the capsule wall membrane is gelatin and / or agar. The oxidative hair dye according to any one of claims 1 to 5 , wherein the component contained in the capsule does not substantially contain water. The oxidative hair dye according to any one of claims 1 to 6 , wherein the capsule is a soft capsule. The oxidative hair dye according to any one of claims 1 to 7 , wherein the second agent is a fluid second agent .