JP2008056635A - Hair dyeing/de-dyeing kit and method for dyeing/de-dyeing hair - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hair dyeing/de-dyeing kit and a method for dyeing/de-dyeing hair by which de-dyeing properties can be improved and reoxidation can be suppressed in the hair dyeing/de-dyeing kit and the method for dyeing/de-dyeing the hair. <P>SOLUTION: The hair dyeing/de-dyeing kit is composed of (A) an oxidation hair dye containing an oxidation dye and a de-dyeing agent containing (B) ascorbic acids and (C) at least one kind selected from a solvent and a surfactant. In the hair dyeing/de-dyeing kit, the octanol/water partition coefficient [log(P<SB>OW</SB>)] of (A) the oxidation dye is within the range of +1.5 to -3.0 of the octanol/water partition coefficient of at least one kind selected from (C) the solvent and surfactant and 0.5-30.0 mass% of the component (C) is contained in the de-dyeing agent. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a hair dyeing / destaining kit and a hair dyeing / destaining method. More specifically, the present invention relates to a hair dyeing / dyeing method capable of obtaining sufficient destaining and suppressing discoloration of hair after the destaining treatment. The present invention relates to a destaining kit and a hair dyeing / destaining method.

In general, as a method of dyeing hair, there is known an oxidative hair dye that allows an oxidative dye to penetrate into the hair cuticle by the action of an alkaline agent and decomposes the melanin pigment and develops (polymerizes) the oxidative dye with the oxidant. It has been. Further, as described in Patent Document 1, hair for decoloring (reducing and depolymerizing) hair dyed with such an oxidative hair dye using a reducing action of a reducing agent such as ascorbic acid. Destaining agents are also known. However, there is a problem in that some oxidative dye polymers produced when an oxidative hair dye is applied to hair are difficult to decolorize. Therefore, as described in Patent Document 2, a method of suppressing the polymerization rate of an oxidative dye polymer produced in hair and promoting reductive decomposition with ascorbic acid by containing a polymerization inhibitor in the oxidative hair dye. Exists.
JP-A-2005-060352 JP 2004-149483 A

  However, when a polymerization inhibitor is contained in the oxidative hair dye, there are cases where the decoloring property is improved in the subsequent decoloring treatment, but there are cases where it is still insufficient. In addition, after several hours or days have passed, the hair that has been destained undergoes reoxidation of the oxidized dye and the depolymerized product remaining in the hair by air oxidation, and the hair that has been destained is discolored again (for example, blackened). ).

  The present invention has been made paying attention to the problems existing in the prior art as described above. An object of the present invention is to provide a hair dyeing / destaining kit and a hair dyeing / destaining method that are excellent in destaining properties and can suppress discoloration of hair after the destaining treatment.

In order to achieve the above object, in the hair dyeing / destaining kit according to claim 1, (A) an oxidative hair dye containing an oxidative dye, (B) ascorbic acid, (C) a solvent and an interface. A hair dyeing / destaining kit comprising a destaining agent containing at least one selected from active agents,
The octanol / water partition coefficient [log (POW)] of the (A) oxidation dye is +1.5 to −3.0 of at least one octanol / water partition coefficient selected from the (C) solvent and surfactant. The component (C) is contained in the decoloring agent in an amount of 0.5 to 30.0% by mass.

  The invention according to claim 2 is the hair dyeing / destaining kit according to claim 1, wherein the destaining agent comprises a first agent containing component (C) and a second agent containing component (B). It is characterized by becoming.

  The invention according to claim 3 is the hair dyeing / destaining method according to claim 1 or claim 2, wherein the component (C) is selected from polyhydric alcohols, lower alcohols, polyhydric alcohol alkyl ethers and aromatic alcohols. It is characterized by being at least one kind.

The invention according to claim 4 is the hair dyeing / destaining method according to any one of claims 1 to 3, wherein (A) a step of dyeing hair with an oxidative hair dye containing an oxidative dye, Next, a method for dyeing and decoloring hair comprising a step of decoloring dyed hair with a decoloring agent containing (B) ascorbic acid and (C) at least one selected from a solvent and a surfactant The (A) octanol / water partition coefficient [log (P _OW )] of the oxidation dye is +1.5 of at least one octanol / water partition coefficient selected from the (C) solvent and surfactant. It is within the range of -3.0, and 0.5 to 30.0 mass% of (C) component is contained in the said decoloring agent.

  According to the present invention, in the hair dyeing / destaining kit and the hair dyeing / destaining method, it is possible to improve the destaining property and to suppress reoxidation.

DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments embodying the present invention will be described in detail.
The hair dyeing / destaining kit of this embodiment contains (A) an oxidative hair dye containing an oxidative dye, (B) ascorbic acid, (C) at least one selected from a solvent and a surfactant. It consists of a destaining agent.

The oxidative hair dye has an octanol / water partition coefficient [log (P _OW )] of +1.5 to −3.0 of the octanol / water partition coefficient of the component (C) contained in the decoloring agent. Within the range (A) an oxidative dye is used. And the hair dye | stained with this oxidative hair dye can be destained by the reducing action of (B) ascorbic acids contained in the said destaining agent.
First, the oxidation hair dye will be described in detail.

<Oxidative hair dye>
The oxidative hair dye in the present embodiment contains (A) an oxidative dye. The oxidation hair dye is composed of a hair dye first agent and a hair dye second agent. The hair dye first agent contains (A) an oxidation dye, an alkali agent and the like. The hair dye second agent contains an oxidizing agent and the like. The hair dye 1st agent and the hair dye 2nd agent are mixed and prepared at the time of use, and the hair dye mixture obtained thereby is applied to the hair to dye the hair. However, the hair dye second agent may not be used, and the oxidative dye contained in the hair dye first agent may be used as an air oxidation type one-component oxidative hair dye that develops color by air oxidation.

<Hair dye 1st agent>
The hair dye first agent in this embodiment contains (A) an oxidation dye and an alkali agent. Moreover, this hair dye 1st agent contains the component normally used for the hair dye 1st agent of an oxidation hair dye as other components.

  (A) Oxidative dye refers to a compound that can develop color by oxidative polymerization with an oxidant contained in the second agent of the hair dye, and is specifically classified into a main intermediate and a coupler. Here, the compound produced by the oxidative polymerization of the component (A) is referred to as a polynuclear compound. Hair is dyed with these polynuclear compounds.

  Examples of main intermediates include phenylenediamines, aminophenols, diaminopyridines, and salts thereof such as hydrochlorides, sulfates, and acetates. These main intermediates may be blended singly or in combination of two or more.

Specific examples of the main intermediate include p-phenylenediamine, toluene-2,5-diamine, N, N-bis (β-hydroxyethyl) -p-phenylenediamine, 2-β-hydroxyethyl-p-phenylenediamine. N-β-hydroxyethyl-N-ethyl-p-phenylenediamine, N-phenyl-p-phenylenediamine, 4,4′-diaminodiphenylamine, 2-chloro-p-phenylenediamine, N, N-dimethyl-p -Phenylenediamine, p-aminophenol, o-aminophenol, p-methylaminophenol, 2,6-dichloro-p-phenylenediamine, p-aminophenylsulfamic acid, 2,5-diaminopyridine and salts thereof. Can be mentioned.
As couplers, resorcin, pyrogallol, catechol, m-aminophenol, o-aminophenol, m-phenylenediamine, 2,4-diaminophenol, 1,2,4-benzenetriol, toluene-3,4-diamine, toluene -2,4-diamine, hydroquinone, α-naphthol, 2,6-diaminopyridine, 1,5-dihydroxynaphthalene, 5-amino-o-cresol, diphenylamine, p-methylaminophenol, phloroglucin, 2,4-diamino Phenoxyethanol, gallic acid, tannic acid, ethyl gallate, methyl gallate, propyl gallate, pentaploid, 1-methoxy-2-amino-4- (2-hydroxyethyl) aminobenzene, 5- (2-hydroxyethylamino) -2-methylphenol, etc. , Their salts, and the like. These couplers may be blended singly or in combination of two or more.

  Among these (A) oxidative dyes, it is possible to improve the decoloring property and suppress reoxidation, so that the octanol / water partition coefficient is +1.5 of the octanol / water partition coefficient of the component (C). The oxidation dye (A) which is in the range of -3.0 is used.

  Content of (A) component in hair dye 1st agent becomes like this. Preferably it is 0.01-15 mass%, More preferably, it is 0.2-15 mass%. If the content is less than 0.01% by mass, sufficient dyeability may not be obtained. On the other hand, even if it exceeds 15 mass%, the dyeability is not improved and it is not economical.

The octanol / water partition coefficient [log (P _OW )] is a scale for partitioning a substance (for example, an oxidation dye) in an aqueous phase and an organic phase (octanol phase), and is represented by the following formula (1): Is defined as follows. The octanol / water partition coefficient of this embodiment is determined by the Organization for Economic Co-operation and Development (OECD Board of Directors Decision “C (81) 30 Final Attachment (1)” 107 or Japanese Industrial Standard Z7260-107 (2000) “Partition Coefficient (1- (Measurement of octanol / water) -flask immersion method "and a value measured by a method defined in the OECD test guideline 117.
log (P _OW ) = log ([P _O ] / [P _W ]) (1)
[ _PO ]: Number of moles of substance in the octanol phase
[P _W ]: Number of moles of substance in the aqueous phase

For example, the higher the log (P _OW ) value, the more hydrophobic the material. For example, a substance with a log (P _OW ) value of 1 is 10 times better in the organic phase than the aqueous phase, and a substance with a log (P _OW ) value of 2 is 100 times better in the organic phase than the aqueous phase. Melt.

  In addition, direct dyes and the like can be appropriately blended as oxidation dyes and dyes other than oxidation dyes listed in the “Quasi-drug raw material standards” (issued in June 1991, Yakuji Nippo).

  The alkaline agent is contained in order to promote the action of the oxidizing agent contained in the hair dye second agent and to improve the dye permeability into the hair by swelling the hair and to improve the dyeability. Alkaline agents include ammonia, alkanolamines, ammonium salts, organic amines (2-amino-2-methyl-1,3-propanediol, guanidine, etc.), inorganic alkalis (sodium hydroxide, potassium hydroxide, sodium carbonate, Potassium carbonate, etc.), basic amino acids (arginine, lysine, etc.) and their salts.

  These alkaline agents may be contained alone or in combination of two or more. The content of the alkaline agent is preferably set to an amount such that the pH of the hair dye first agent is in the range of 8-12. If the pH of the hair dye first agent is less than 8, the action of the oxidizing agent may not be sufficiently promoted when the hair dye first agent is mixed with the hair dye second agent. On the other hand, when pH exceeds 12, when hair dye mixture is applied to hair, defects, such as damage, are easy to generate | occur | produce in hair.

  Moreover, it is preferable to make this hair dye 1st agent contain polymerization inhibitors, such as (B) ascorbic acids and sulfites which are reducing agents. Thereby, when the component (A) is oxidatively polymerized with the oxidizing agent, a polynuclear compound having a low polymerization rate that is easily decolored with the decoloring agent is generated, so that the decoloring property can be improved.

  In addition, this hair dye first agent includes, as other components, water, a surfactant, an oil component, fatty acids such as lauric acid, myristic acid, linolenic acid, sugars such as sorbitol and maltose, polyhydric alcohol, batyl Alkyl glyceryl ethers such as alcohol and chimyl alcohol, gum arabic, karaya gum, tragacanth gum, sodium alginate, xanthan gum, carboxymethylcellulose, cross-linked polyacrylic acid, polydimethylmethylenepiperidinium chloride and other preservatives such as parabens Chelating agents such as EDTA-2Na, stabilizers such as phenacetin, 8-hydroxyquinoline, acetanilide, sodium pyrophosphate, barbituric acid, uric acid, tannic acid, phosphoric acid, citric acid, sulfuric acid, acetic acid, lactic acid, tartaric acid, etc. pH adjuster, plant extract Herbal extracts, vitamins, fragrances, UV absorbers, water and the like. Moreover, you may mix | blend at least 1 type chosen from what is listed in "quasi-drug material standard" (June 1991 issue, Yakuji Nippo).

  Examples of the surfactant include nonionic surfactants, cationic surfactants, anionic surfactants, and amphoteric surfactants.

  Examples of the oil component include higher alcohols, fats and oils, waxes, hydrocarbons, esters, and silicones.

  Specific examples of the higher alcohol include lauryl alcohol, myristyl alcohol, cetyl alcohol, stearyl alcohol, cetostearyl alcohol, and behenyl alcohol.

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

  The dosage form of the first hair dyeing agent is not particularly limited, such as a liquid such as an aqueous solution, a dispersion or an emulsion, a gel, a foam or a cream.

<Hair dye 2nd agent>
This hair dye second agent contains an oxidizing agent. Moreover, this hair dye 2nd agent contains the component normally used for the hair dye 2nd agent of an oxidation hair dye as other components.
The oxidizing agent is contained for decolorizing melanin contained in the hair and oxidizing the oxidizing dye contained in the first hair coloring agent to cause color development. Examples of the oxidizing agent include potassium bromate, sodium bromate, sodium perborate and hydrogen peroxide.
The content of the oxidizing agent in the hair dye second agent is preferably 0.1 to 15.0% by mass.

  This hair dye 2nd agent can be made to contain suitably the other component as described in the said hair dye 1st agent. Moreover, when hydrogen peroxide is contained as an oxidizing agent, it is preferable to contain a stabilizer in order to suppress decomposition of hydrogen peroxide. Examples of the stabilizer include urea, phenacetin, sodium stannate, ethylene glycol phenyl ether, 8-oxyquinoline, phosphoric acid and the like.

The dosage form of the second hair dyeing agent is not particularly limited, such as a liquid such as an aqueous solution, a dispersion or an emulsion, a gel, a foam or a cream.
<Hair dye mixture>

When using an oxidative hair dye, a hair dye mixture can be obtained by mixing and preparing the hair dye first agent and the hair dye second agent at a predetermined ratio. The dosage form of this hair dye mixture is not particularly limited, such as liquid, cream, gel or foam.
The oxidative hair dye of this embodiment can be suitably used as an oxidative hair dye by applying to hair.

  Next, the destaining agent will be described.

<Destaining agent>
The destaining agent in the present embodiment contains (B) ascorbic acid, (C) at least one selected from a solvent and a surfactant. The destaining agent is composed of a destaining agent first agent and a destaining agent second agent.

  The destaining agent first agent contains (B) ascorbic acid and the like. This first destaining agent is a powdery composition. On the other hand, the second agent for destaining contains at least one selected from (C) a solvent and a surfactant. The second destaining agent is a liquid, gel or cream composition. When the desiccant agent 1 and the desiccant agent 2 are mixed and prepared at the time of use, (B) ascorbic acids contained in the desiccant agent 1 are dissolved in the desiccant agent 2. A desiccant mixture can be obtained.

<First destaining agent>
In addition to (B) ascorbic acids, fumaric acid, a dispersant and the like can be blended with the first desiccant.

  (B) Ascorbic acids are blended to reduce polynuclear compounds that dye hair. When the polynuclear compound is depolymerized or made non-resonant by the reducing action of the component (B), it easily becomes colorless due to loss of its color.

  Specific examples of the (B) ascorbic acids include ascorbic acid, salts and derivatives thereof. Specific examples of ascorbate include sodium ascorbate, potassium ascorbate, calcium ascorbate, ammonium ascorbate, monoethanolamine ascorbate, diethanolamine ascorbate and the like. Specific examples of ascorbic acid derivatives include ascorbyl sulfate disodium, magnesium ascorbate phosphate, ascorbyl palmitate, ascorbyl stearate, ascorbyl dipalmitate, ascorbyl tetrahexyldecanoate, ascorbyl myristate, ascorbyl laurate Ascorbyl acetate, Ascorbyl propionate, Ascorbyl tartrate, Ascorbyl citrate, Ascorbyl succinate, Ascorbyl benzoate, (Ascorbyl / tocopheryl) potassium phosphate, Ascorbyl ethyl, Ascorbyl allantoin, Ascorbic acid chitosan, Ascorbic acid methylsilanol, Tetradecyl Hexyl ascorbyl, aminopropyl ascorbyl phosphate, ascorbate polype Tide, ascorbyl glucoside, and the like ascorbyl methylsilanol pectinate, and the like.

  Among these components (B), ascorbic acid is preferable because of its excellent depolymerization action of the polynuclear compound. Moreover, since ascorbic acid has poor storage stability in an aqueous solution, long-term stability of decoloring property can be improved by storing it as a powder. Here, the powder form is a substance that does not have fluidity even when a certain force is applied and is crushed into a fine solid.

  Moreover, you may use a commercial product as powdered ascorbic acid. Specific examples of the commercially available products include ascorbic acid (fine granules) (Roche), ascorbic acid (crystal) (Roche), ascorbic acid (fine powder) (Roche), ascorbic acid (super) Fine powder) (manufactured by Roche). Among these, ascorbic acid (crystal) (manufactured by Roche) is preferable from the viewpoint of improving the mixing property.

  The content of the component (B) in the decoloring agent is preferably 5 to 20% by mass, more preferably 8 to 15% by mass, and particularly preferably 8 to 10% by mass. If the content is less than 7% by mass, sufficient decolorization property may not be obtained. However, when configured as a two-component decoloring agent as described above, the content of the component (B) in the first decoloring agent is 70 to 100% by mass, preferably 80 to 100% by mass. If the content is less than 70% by mass, sufficient decolorization property may not be obtained.

  Fumaric acid is blended to suppress reoxidation of components generated by depolymerization or non-resonance of a polynuclear compound having a low polymerization rate, and to suppress discoloration of hair.

  The dispersing agent suppresses (B) ascorbic acid and the like from agglomerating to form a lump state, and during mixing preparation of the decoloring agent first agent and the decoloring agent second agent, Is added to improve the dispersibility of the first dyeing agent. Specific examples of the dispersant include stearic acid metal salts such as calcium stearate and magnesium stearate, talc, crystalline cellulose, low-substituted hydroxypropylcellulose, dextrin and the like.

<Second destaining agent>
In addition to at least one selected from (C) a solvent and a surfactant, water, a water-soluble polymer compound, and the like can be added to the second agent for destaining.

  (C) At least 1 sort (s) chosen from a solvent and surfactant is mix | blended in order to improve decoloring property and to suppress reoxidation. And among these (C) components, since it is possible to improve the decoloring property and to suppress reoxidation, the octanol / water partition coefficient of the (A) oxidation dye is the octanol / water content of the (C) component. The component (C) that is within the range of +1.5 to −3.0 of the water distribution coefficient is used.

  Specific examples of the component (C) include solvents such as polyhydric alcohols, lower alcohols, polyhydric alcohol alkyl ethers and aromatic alcohols, nonionic surfactants, cationic surfactants, anionic surfactants and Surfactants such as amphoteric surfactants can be mentioned.

  Examples of the polyhydric alcohol include ethylene glycol, diethylene glycol, polyethylene glycol, propylene glycol, dipropylene glycol, glycerin, diglycerin, hexylene glycol, and 1,3-butylene glycol. These polyhydric alcohols may be contained alone or in combination of two or more.

  Examples of the lower alcohol include methanol, ethanol, propanol, isopropanol, butanol and the like. These lower alcohols may be contained alone or in combination of two or more.

  Examples of the polyhydric alcohol alkyl ether include ethylene glycol monoethyl ether, ethylene glycol monomethyl ether, ethylene glycol monobutyl ether, diethylene glycol monoethyl ether and the like. These polyhydric alcohol alkyl ethers may be contained alone or in combination of two or more.

  As the aromatic alcohol, benzyl alcohol, 2-phenylethyl alcohol, cinnamyl alcohol, phenylpropanol, 1-phenoxy-2-propanol, α-methylbenzyl alcohol, dimethylbenzylcarbinol, benzyloxyethanol, phenoxyethanol, phenoxyisopropanol, Examples thereof include p-anisyl alcohol. Among these aromatic alcohols, benzyl alcohol is preferred because of its excellent depolymerization action for polynuclear compounds. These aromatic alcohols may be contained alone or in combination of two or more. In addition, it is preferable to contain ethanol and benzyl alcohol because the skin irritation is low, the destaining rate is improved, and reoxidation can be suppressed.

  Examples of nonionic surfactants include ether type nonionic surfactants and ester type nonionic surfactants. Examples of ether type nonionic surfactants include polyoxyethylene (hereinafter referred to as POE) cetyl ether, POE stearyl ether, POE behenyl ether, POE oleyl ether, POE lauryl ether, POE octyldodecyl ether, POE hexyl decyl ether, POE isostearyl ether, POE nonyl phenyl ether, POE octyl phenyl ether, POE alkyl (C12-C14) ether and the like can be mentioned.

  Examples of the ester type nonionic surfactant include POE sorbitan monooleate, POE sorbitan monostearate, POE sorbitan monopalmitate, POE sorbitan monolaurate, POE sorbitan trioleate, POE glycerine monostearate, POE monomyristate POE Glycerin, tetraoleic acid POE sorbite, hexastearic acid POE sorbit, monolauric acid POE sorbit, POE sorbite beeswax, monooleic acid polyethylene glycol, monostearic acid polyethylene glycol, monolauric acid polyethylene glycol, lipophilic monooleic acid glycerin, lipophilic oil Glyceryl monostearate, self-emulsifying glyceryl monostearate, sorbitan monooleate, sol of sesquioleate Tan, sorbitan trioleate, sorbitan monostearate, sorbitan monopalmitate, sorbitan monolaurate, sucrose fatty acid ester, decaglyceryl monolaurate, decaglyceryl monostearate, decaglyceryl monooleate, decaglyceryl monomyristate, etc. Can be mentioned.

  Cationic surfactants include lauryl trimethyl ammonium chloride, cetyl trimethyl ammonium chloride, stearyl trimethyl ammonium chloride, alkyl trimethyl ammonium chloride, distearyl dimethyl ammonium chloride, cetyl trimethyl ammonium bromide, stearyl trimethyl ammonium bromide, ethyl lanolin sulfate fatty acid Examples thereof include aminopropylethyldimethylammonium, stearyltrimethylammonium saccharin, cetyltrimethylammonium saccharin, and methyl behenyltrimethylammonium sulfate.

  Examples of anionic surfactants include alkyl sulfate salts such as sodium lauryl sulfate and triethanolamine lauryl sulfate, alkyl ether sulfate salts such as sodium POE lauryl ether sulfate, sodium stearoylmethyl taurate, triethanolamine dodecylbenzenesulfonate, Examples include sodium tetradecene sulfonate, POE lauryl ether phosphate and salts thereof, N-lauroyl glutamates, and N-lauroylmethyl-β-alanine salts.

Examples of amphoteric surfactants include 2-undecyl-N-carboxymethyl-N-hydroxyethylimidazolinium betaine sodium, cocoamidopropyl betaine, lauryldimethylaminoacetic acid betaine.
These surfactants may be contained alone or in combination of two or more.

  Content of (C) component in a decoloring agent is 0.5-30.0 mass%, Preferably it is 1.0-15.0 mass%, More preferably, it is 3.0-10.0 mass%. . When the content is less than 0.5% by mass, the decolorization property is deteriorated and the reoxidation suppressing effect may not be obtained. On the other hand, if it exceeds 30.0% by mass, the effect of suppressing reoxidation cannot be obtained and the skin irritation may be increased.

  Water is blended as a solubilizer for the component (B) contained in the first destaining agent.

  The water-soluble polymer compound is blended as a thickener that gives an appropriate viscosity to the decoloring agent. Specific examples of water-soluble polymer compounds include cellulose-based water-soluble polymer compounds, starch-based water-soluble polymer compounds, alginic acid-based water-soluble polymer compounds, plant-based water-soluble polymer compounds, and microbial-based water-soluble polymer compounds. And vinyl-based water-soluble polymer compounds. Examples of the cellulose water-soluble polymer compound include methyl cellulose, ethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, methyl hydroxypropyl cellulose, carboxymethyl cellulose and the like. Examples of the starch-based water-soluble polymer compound include starch, dextrin, carboxymethyl starch, and methyl starch. Examples of alginic acid-based water-soluble polymer compounds include propylene glycol alginate and sodium alginate. Examples of plant water-soluble polymer compounds include guar gum, locust bean gum, quince seed, galactan, arabic gum, karaya gum, tragacanth gum, carrageenan and the like. Examples of the microbial water-soluble polymer compound include xanthan gum, dextran, succinoglucan, and curdlan. Examples of the vinyl water-soluble polymer compound include polyvinyl alcohol, polyvinyl pyrrolidone, polyvinyl methyl ether, carboxyvinyl polymer, sodium polyacrylate, and the like. These components (B) may be blended singly or in combination of two or more.

  Furthermore, as other components, oily components such as fats and oils, waxes, higher alcohols, higher fatty acids, esters, silicones, hydrocarbons, sugars such as sorbitol, maltose, xylose, preservatives such as parabens, EDTA-2Na, Chelating agents such as hydroxyethanediphosphonic acid, phenacetin, 8-hydroxyquinoline, acetanilide, sodium pyrophosphate, barbituric acid, uric acid, tannic acid and other stabilizers, plant extracts, herbal extracts, vitamins, fragrances, ultraviolet rays Examples include absorbents, pH adjusters such as hydrochloric acid, sulfuric acid, and lactic acid. Moreover, you may contain at least 1 type chosen from what is listed in "Quasi-drug raw material specification" (June 1991 issue, Yakuji Nippo).

  Next, the hair dyeing / destaining method of this embodiment will be described.

  The hair dyeing / destaining method of the present embodiment includes a step of dyeing hair with the oxidative hair dye, and a step of performing a destaining treatment with the destaining agent on the hair subjected to the hair dyeing treatment. I have. The step of dyeing hair with the oxidative hair dye includes the first agent of the hair dye containing the component (A) in the range of the specific octanol / water partition coefficient as described above, and the oxidant. It is a step of applying color to the hair by applying the hair dye mixture obtained by mixing and preparing the hair dye second agent. At this time, the monomer component (A) is polymerized using the oxidizing power of the oxidizing agent to form a polynuclear compound. The polynuclear compound is colored to dye hair. Thereafter, the hair dye mixture is washed away and air-dried to obtain a hair dyed hair. Next, the step of performing the decoloring treatment with the decoloring agent on the hair-treated hair includes the decontamination agent containing the component (C) in the range of a specific octanol / water partition coefficient, It is a step of applying to hair dyed hair. At this time, the relationship between the component (A) and the component (C) is such that the octanol / water partition coefficient of the component (A) is +1.5 to −3.0 of the octanol / water partition coefficient of the component (C). Is set to be within the range. In this relationship, the polynuclear compound that dyes hair is easily depolymerized by the reducing action of the component (B) contained in the decoloring agent. At this time, when the polynuclear compound is depolymerized, it is reductively decomposed into a monomer or a low polymer, and is easily colorless by losing its color. Thereafter, the destaining agent can be washed away and air-dried for destaining.

  According to the hair dyeing / destaining kit and hair dyeing / destaining method of the present embodiment, the following effects can be obtained.

  (1) According to the hair dyeing / destaining kit and hair dyeing / destaining method of this embodiment, the octanol / water partition coefficient of component (A) is +1 of the octanol / water partition coefficient of component (C). Within the range of .5 to -3.0, the decoloring agent contains 0.5 to 30.0% by mass of the component (C). Thereby, since the depolymerization product produced in the hair in the decoloring treatment step is easily dissolved in the component (C), the depolymerization product can be easily discharged from the inside of the hair. As a result, it is possible to obtain good decolorization properties and reoxidation (hair discoloration after decolorization) suppression effect.

  Next, the embodiment will be described more specifically with reference to examples and comparative examples.

(Examples 1-12, Comparative Examples 1-4)
Hair dyeing / destaining kit and hair dyeing / destaining method A hair dye first agent and a hair dye second agent shown in Tables 1-2 are mixed and prepared at a ratio of 1: 1, and Examples 1-12 The hair dye mixtures of Comparative Examples 1 to 4 were obtained. The obtained hair dye mixture was applied to a medium brown human hair bundle, left for 20 minutes, washed with a normal shampoo, and then dried to obtain an oxidized hair dye treated hair bundle. Then, the decoloring agent 1st agent shown in Tables 1-2 and the decoloring agent 2nd agent were mixed and prepared by mass ratio of 10: 1, and the decoloring agent of Examples 1-12 and Comparative Examples 1-4 was used. Obtained. The obtained decoloring agent was applied to the oxidative hair-dyed hair bundle using a brush, left at room temperature for 30 minutes, washed with a normal shampoo, and then dried to obtain a de-dyed hair bundle. About this decoloring treatment hair bundle, it evaluated about the decoloring rate and the reoxidation power. Moreover, about the said decoloring agent, skin irritation was evaluated. The evaluation results are shown in Tables 1-2. In addition, the unit of the numerical value which shows content of each component in Tables 1-2 is mass%.

<Destaining rate>
In the hair bundle (untreated hair bundle) before the hair dyeing treatment, L ^* a ^* b ^* values (L ₀ , a ₀ and b ₀ ) with a spectrocolorimeter (manufactured by Minolta, model number: CM-508d). Was measured. Similarly, L ^* a ^* b ^* values (L ₁ , a _1, and b ₁ ) were measured on the hair bundle treated with oxidative dyeing obtained as described above. After deoxidizing the oxidized hair bundle, the L ^* a ^* b ^* values (L ₂ , a ₂ and b ₂ ) were measured in the same manner. Destaining degree (ΔE _i ) was calculated by the following equation (2) by comparing L ^* a ^* b ^* values of the above-mentioned hair-dyed hair bundle and de-dyed hair bundle.
ΔE _i = {(L _i −L ₀ ) ² + (a _i −a ₀ ) ² + (b _i −b ₀ ) ² } ^1/2 (2)
L _i: hair dyeing or destained processing hair bundle L ^* value _{a i:} hair dyeing or destained processing hair bundle of a ^* value _{b i:} of hair dyeing or destaining processing hair bundle b ^* values _{L 0:} untreated L ^* value of the hair bundle a ₀ : a ^* value of the untreated hair bundle b ₀ : b ^* value of the untreated hair bundle Next, from ΔE ₁ and ΔE ₂ , the decoloring property (D) (%) Was calculated. The larger the calculated value, the better the decolorization.
D = (1−ΔE ₂ / ΔE ₁ ) × 100 (3)

<Re-oxidation power>
About the decoloring treatment hair bundle of each Example and Comparative Example, after storing at room temperature for 20 days, whether or not it is re-oxidized by visual observation of the color change of the decolorization treatment hair bundle, No change at all: ◎, hair color is almost the same as that immediately after destaining: ○, hair color is slightly changed from immediately after destaining: △, hair color is immediately after destaining Extremely changed: x, and the evaluation result of reoxidation power.

<Skin irritation>
Ten subjects who were healthy people were soaked in the 2.5 cm square lint cloth of 0.5 mL each of the decoloring agents of Examples 1 to 12 and Comparative Examples 1 to 4 obtained as described above. It was affixed to the forehead part of 15 minutes. In the meantime, the degree of skin irritation was evaluated by an interview with the subject. The evaluation was as follows: no or almost no irritation was felt: ◎, slight irritation was felt: ○, slightly irritation was felt: Δ, irritation was clearly felt: x. Of each of the 10 test subjects, the evaluation with the largest number of people was taken as a representative evaluation result.

  As shown in Table 1 and Table 2, the oxidation hair dye containing the component (A) having a specific octanol / water partition coefficient and the component (C) having a specific octanol / water partition coefficient in each example. When performing the hair dyeing process using the contained destaining agent, it was shown that a favorable result is obtained in each evaluation item.

Claims (4)

Hair dyeing / destaining comprising (A) an oxidative hair dye containing an oxidative dye, (B) an ascorbic acid, and (C) at least one selected from a solvent and a surfactant. A dye kit,
The octanol / water partition coefficient [log (P _OW )] of the (A) oxidation dye is +1.5 to −3. Of at least one octanol / water partition coefficient selected from the solvent (C) and the surfactant. A hair dyeing / dedying kit characterized by being in the range of 0 and containing 0.5 to 30.0% by mass of component (C) in the destaining agent. The hair dyeing / destaining kit according to claim 1, wherein the destaining agent comprises a first agent containing the component (C) and a second agent containing the component (B). The said (C) component is at least 1 sort (s) chosen from a polyhydric alcohol, a lower alcohol, a polyhydric alcohol alkyl ether, and an aromatic alcohol, The hair dyeing and decoloring of Claim 1 or Claim 2 characterized by the above-mentioned. kit. (A) A step of dyeing hair with an oxidative hair dye containing an oxidative dye, and then (B) a decoloring agent containing ascorbic acids and (C) at least one selected from a solvent and a surfactant. , A hair dyeing / destaining method comprising a step of destaining dyed hair,
The octanol / water partition coefficient [log (P _OW )] of the (A) oxidation dye is +1.5 to −3. Of at least one octanol / water partition coefficient selected from the solvent (C) and the surfactant. A method for dyeing and destaining hair, wherein the decoloring agent contains 0.5 to 30.0% by mass of component (C) within the range of 0.