JP5160757B2 - Hair depigmenting agent composition - Google Patents

Description

  The present invention relates to a hair decoloring agent composition for decoloring hair dyed with a dye such as an oxidative dye.

Conventionally, as this type of hair depigmenting composition, the hair depigmenting composition described in Patent Document 1 is known. This hair depigmenting agent composition is provided as a first agent composition containing water-soluble polymer compounds such as water and karaya gum, and as a second agent composition containing ascorbic acid, etc. To reduce and decolorize.
Japanese Patent Laid-Open No. 2004-083431

However, the conventional hair depigmenting agent composition has a problem that sufficient decoloring ability and long-term stability of viscosity cannot be obtained.
The present invention has been made paying attention to the problems existing in the prior art as described above. An object of the invention is to provide a hair decoloring agent composition capable of obtaining sufficient decoloring property and long-term stability of viscosity.

In order to achieve the above object, the hair depigmenting composition according to claim 1 is a hair depigmenting composition prepared by mixing the first agent and the second agent at the time of use. The agent and the second agent contain the following components , and the pH at the time of use is 2.0 to 5.0 .
First agent: (A) water, (B) water-soluble polymer compound, (C) chelating agent, and (D) benzyl alcohol . Second agent: (E) ascorbic acid. A hair depigmenting agent composition in which the first agent and the second agent are mixed and prepared at the time of use, and the first agent and the second agent contain the following components, and the pH at the time of use is 2.0. It is -5.0.
First agent: (A) water, (B) xanthan gum, (C) chelating agent and (D) solvent
The second agent: (E) invention of ascorbic acids <br/> claim 3, there is provided a hair destaining composition of 請 Motomeko 2 wherein the blending the carboxymethyl cellulose as a further component (B) Features.
The invention described in claim 4 is the hair decoloring composition according to claim 3, wherein the carboxymethyl cellulose has an etherification degree of 1.8 to 3.0 .
The invention according to claim 5 is a hair depigmenting composition in which the first agent and the second agent are mixed and prepared at the time of use, and the first and second agents contain the following components, The pH during use is 2.0 to 5.0 .
First agent: (A) water, (B) carboxymethyl cellulose having a degree of etherification of 1.8 to 3.0, (C) a chelating agent, and (D) a solvent.
Second agent: (E) Ascorbic acids

  According to the hair decoloring agent composition of the present invention, sufficient decoloring property and long-term stability of viscosity can be obtained.

Hereinafter, an embodiment embodying the hair decoloring agent composition of the present invention will be described in detail.
The hair depigmenting agent composition of the present embodiment comprises (A) water, (B) a water-soluble polymer compound, (C) a chelating agent, and (D) a hair depigmenting agent first agent comprising (E) ) It is composed of a hair decoloring agent second agent containing ascorbic acids. At the time of use, the hair depigmenting agent first agent (hereinafter referred to as decoloring first agent) and the hair depigmenting agent second agent (hereinafter referred to as decoloring second agent) are mixed to obtain hair decoloration. An agent mixture (hereinafter referred to as a decolorization mixture) is obtained. Such hair can be destained by applying the destaining mixture to hair dyed with an oxidative hair dye.

<Destaining first agent>
The first agent in this embodiment contains (A) water, (B) a water-soluble polymer compound, (C) a chelating agent, and (D) a solvent.

(A) Water is mix | blended as a solvent which melt | dissolves the said decoloring 2nd agent.
30-98 mass% is preferable, as for content of (A) water contained in the decoloring 1st agent, 50-95 mass% is more preferable, and 70-95 mass% is the most preferable.

  (B) A water-soluble high molecular compound is mix | blended as a thickener for giving moderate viscosity to a hair decoloring agent composition. Specific examples of the component (B) 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, microbial-based water-soluble polymer compounds, Examples include 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, gum arabic, 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.

  Among these, from the viewpoint of improving the mixing property when mixing the first dyeing agent and the second dyeing agent and suppressing dripping when applying the destaining mixture to the hair, a cellulose-based water-soluble polymer compound, A microbial water-soluble polymer compound and a vinyl water-soluble polymer compound are preferable, and carboxymethyl cellulose, xanthan gum, and carboxyvinyl polymer are more preferable.

  Moreover, from the viewpoint of improving the long-term stability of the viscosity, carboxymethyl cellulose is preferable, and carboxymethyl cellulose having a degree of etherification of 1.8 to 3.0 is more preferable. Here, the degree of etherification indicates the degree of substitution of the three hydroxyl groups per cellulose unit with carboxymethyl groups. When all the hydroxyl groups are substituted with carboxymethyl groups, the degree of etherification is 3.0.

  Further, from the viewpoint of improving the long-term stability of the viscosity, it is preferable to use carboxymethyl cellulose and other water-soluble polymer compound together, more preferably to use carboxymethyl cellulose and xanthan gum together, and the degree of etherification is 1.8 to Most preferably, 3.0 carboxymethylcellulose and xanthan gum are used in combination.

  The content of the component (B) in the decoloring first agent is preferably 0.5 to 5.0% by mass, more preferably 0.5 to 3.0% by mass, and most preferably 1.0 to 2%. 0.0% by mass. If the content is less than 0.5% by mass, the decolorization mixture may sag from the hair. On the other hand, when it mixes exceeding 5.0 mass%, there exists a possibility that the mixing property of the destaining 1st agent and the destaining 2nd agent may fall.

(C) A chelating agent is mix | blended in order to acquire the long-term stabilization effect of the viscosity by a synergistic effect with (B) component.
Specific examples of the component (C) include EDTA and its salt, hydroxyethane diphosphonic acid and its salt, sodium citrate, sodium metaphosphate, sodium polyphosphate and the like. These components (C) may be blended alone or in combination of two or more.
Among these, EDTA-2Na and hydroxyethanediphosphonic acid are preferable from the viewpoint of improving the long-term stability of the viscosity of the first dyeing agent.

  The content of the component (C) in the decoloring first agent is preferably 0.01 to 10.0% by mass, more preferably 0.05 to 5.0% by mass, and most preferably 0.1 to 3%. 0.0% by mass. If this content is less than 0.01% by mass, the viscosity of the first agent for decolorization may decrease over time. On the other hand, even if the amount exceeds 10.0% by mass, the long-term stabilization of the viscosity due to the synergistic effect of the component (C) and the component (B) is not observed, which is not economical.

  (D) A solvent is mix | blended in order to improve the permeability to the hair of an active ingredient. Specific examples of the component (D) include lower alcohols, polyhydric alcohols, polyhydric alcohol alkyl ethers, and aromatic alcohols.

Examples of the lower alcohol include methanol, ethanol, propanol, isopropanol, butanol and the like.
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.
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.
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. These components (D) may be blended alone or in combination of two or more.
Among these components (D), benzyl alcohol having high active ingredient permeability is preferable.

  The content of the component (D) in the first destaining agent is preferably 0.1 to 30.0% by mass, more preferably 0.5 to 15.0% by mass, and most preferably 1.0 to 10%. 0.0% by mass. When this content is less than 0.1% by mass, the hair permeation promoting effect of the active ingredient may not be obtained. On the other hand, when it exceeds 30.0 mass%, skin irritation may occur.

The decoloration first agent of the present embodiment can contain an oily component, a surfactant and the like as other components within a range not impairing the effects of the present invention.
The oil component is blended in order to impart moisture to the hair. Examples of the oil component include fats and oils, waxes, higher alcohols, higher fatty acids, esters, silicones, hydrocarbons and the like.

  Oils include olive oil, rosehip oil, camellia oil, shea fat, macadamia nut oil, almond oil, tea seed oil, sasanqua oil, safflower oil, sunflower oil, soybean oil, cottonseed oil, sesame oil, beef fat, cocoa butter, corn oil , Peanut oil, rapeseed oil, rice bran oil, rice germ oil, wheat germ oil, pearl barley oil, grape seed oil, avocado oil, carrot oil, macadamia nut oil, castor oil, linseed oil, palm oil, mink oil, egg yolk oil, etc. Is mentioned. Examples of waxes include beeswax, candelilla wax, carnauba wax, jojoba oil, and lanolin.

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

  Examples of higher fatty acids include lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid, isostearic acid, hydroxystearic acid, 12-hydroxystearic acid, oleic acid, undecylenic acid, linoleic acid, ricinoleic acid, and lanolin fatty acid. It is done.

  Esters include diisopropyl adipate, diisobutyl adipate, dioctyl adipate, 2-hexyldecyl adipate, diisostearyl adipate, isopropyl myristate, cetyl octanoate, cetyl isooctanoate, isononyl isononanoate, isodecyl isononanoate , Isotridecyl isononanoate, diisopropyl sebacate, octyldodecyl myristate, isopropyl palmitate, butyl stearate, stearyl stearate, hexyl laurate, myristyl myristate, decyl oleate, hexyl decyl dimethyloctanoate, triisodecyl myristate, myristic acid Isostearyl, 2-ethylhexyl palmitate, octyldodecyl ricinoleate, fatty acid (C10-30) (choleste / Lanosteryl lactate), lauryl lactate, cetyl lactate, myristyl lactate, octyldodecyl lactate, lanolin acetate, isocetyl stearate, isocetyl isostearate, cholesteryl 12-hydroxystearate, ethylene glycol di-2-ethylhexanoate, dipentaerythritol fatty acid Examples thereof include esters, N-alkyl glycol monoisostearate, cetyl caprate, glyceryl tricaprylate, neopentyl glycol dicaprate, diisostearyl malate, and lanolin derivatives.

  Examples of silicones include dimethylpolysiloxane (dimethicone), methylphenylpolysiloxane, terminal hydroxyl group-modified dimethylpolysiloxane, fatty acid-modified polysiloxane, amino-modified silicone, alcohol-modified silicone, glycerin-modified silicone, aliphatic alcohol-modified polysiloxane, and epoxy-modified. Examples thereof include silicone, fluorine-modified silicone, cyclic silicone, alkyl-modified silicone, and polyether-modified silicone.

  Examples of the hydrocarbon include α-olefin oligomer, light isoparaffin, light liquid isoparaffin, liquid isoparaffin, liquid paraffin, squalane, polybutene, paraffin, polyethylene powder, microcrystalline wax, petrolatum and the like. These oily components may be contained alone or in combination of two or more.

  The surfactant is blended as an emulsifier or solubilizer in order to maintain the viscosity stability of the hair decoloring agent composition or to improve the familiarity with the hair. Examples of the surfactant include nonionic surfactants, cationic surfactants, anionic surfactants, and amphoteric surfactants.

  Specific examples of the nonionic surfactant include ether type nonionic surfactants and ester type nonionic surfactants. Specific examples of the ether type nonionic surfactant 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. Examples include decyl ether, POE isostearyl ether, POE nonyl phenyl ether, POE octyl phenyl ether, and POE alkyl (C12-C14) ether.

  Specific examples of the ester type nonionic surfactant include POE sorbitan monooleate, POE sorbitan monostearate, POE sorbitan monopalmitate, POE sorbitan monolaurate, POE sorbitan trioleate, POE glycerin monostearate, monoester Myristic acid POE glycerin, tetraoleic acid POE sorbite, hexastearic acid POE sorbit, monolauric acid POE sorbit, POE sorbit beeswax, monooleic acid polyethylene glycol, monostearic acid polyethylene glycol, monolauric acid polyethylene glycol, lipophilic monooleic acid glycerin , Lipophilic glyceryl monostearate, self-emulsifying glyceryl monostearate, sorbitan monooleate, sesquiolei Sorbitan acid, sorbitan trioleate, sorbitan monostearate, sorbitan monopalmitate, sorbitan monolaurate, sucrose fatty acid ester, decaglyceryl monolaurate, decaglyceryl monostearate, decaglyceryl monooleate, decaglyceryl monomyristate, etc. Is 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.

  The pH of the first destaining agent is preferably 2.0 to 5.0, more preferably 2.5 to 4.0, and most preferably 2 in order to extract the reducing power of ascorbic acids and improve the destaining property. .8 to 3.5. If the pH of the destaining first agent is less than 2.0, the hair and scalp may be damaged. On the other hand, when this pH exceeds 5.0, there is a possibility that the decoloring property is lowered. Moreover, in order to adjust pH as mentioned above, it is preferable to mix | blend an acid as a pH adjuster. Specific examples of the acid include inorganic acids and organic acids. Examples of the inorganic acid include hydrochloric acid, sulfuric acid, nitric acid, phosphoric acid and the like. Examples of the organic acid include levulinic acid, lactic acid, acetic acid, glycolic acid, and citric acid.

  Furthermore, as other ingredients, sugars such as sorbitol, maltose, xylose, preservatives such as paraben, stabilizers such as phenacetin, 8-hydroxyquinoline, acetanilide, sodium pyrophosphate, barbituric acid, uric acid, tannic acid, plant extracts Herbal extracts, vitamins, fragrances, UV absorbers and the like. Moreover, you may contain at least 1 type chosen from what is listed in "quasi-drug raw material specification" (June 1991 issue, Yakuji Nippo).

  The dosage form of the first dyeing agent is a liquid or gel such as an aqueous solution, a dispersed liquid, or an emulsified liquid.

<Destaining second agent>
The (E) ascorbic acids used in the present embodiment are contained as a reducing agent for reductively decomposing (depolymerizing) a polynuclear compound dyeing hair produced by oxidative polymerization of an oxidative dye.
Specific examples of the component (E) include ascorbic acid, its salts and derivatives. 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, ascorbyl phosphate magnesium, 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 (E) components, ascorbic acid is preferable because of its excellent depolymerization action of the polynuclear compound. In addition, 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 solid such as powder or granules.
Moreover, you may use a commercial product as (E) component. 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 ascorbic acids in the destaining second 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.

  In the second dyeing agent, fumaric acid, a dispersant, a coating agent, and the like can be blended as other components as long as the effects of the present invention are not impaired.

  Fumaric acid is blended in order to suppress reoxidation of components generated by depolymerization of the polynuclear compound and to suppress recoloration of hair.

  The dispersant suppresses the formation of a lump by aggregation of the component (E) when the destaining first agent and the destaining second agent are mixed and prepared, and the destaining in the destaining first agent. Blended to improve the dispersibility of the second 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.

  The coating agent is applied to the surface of the powdered component (E) and is applied to improve storage stability by suppressing contact of air and water. The coating agent may be any oily component that is non-reactive, non-volatile, and liquid at around room temperature, and preferably includes liquid paraffin, liquid isoparaffin, dimethicone, and the like.

  The dosage form of the second dyeing agent is a solid form such as a powder form or a granular form.

<Destaining mixture>
The destaining mixture is obtained by mixing and preparing a destaining first agent and a destaining second agent at a predetermined ratio. The mixing ratio of the destaining first agent and the destaining second agent (= mass of the destaining first agent: mass of the destaining second agent) is preferably 3: 1 to 50: 1, more preferably 5: 1-20: 1.

The pH of the decolorization mixture is preferably adjusted to 2.0 to 5.0, more preferably 2.5 to 4.0, particularly preferably 2.8 to 3.5. If this pH is less than 2.0, the hair and scalp may be damaged. On the other hand, when this pH exceeds 5.0, there is a possibility that the decoloring property is lowered.
The dosage form of the destaining mixture is liquid or gel such as an aqueous solution, a dispersion liquid, and an emulsified liquid.

Next, the usage method of the hair decoloring agent composition of this embodiment is demonstrated.
The first destaining agent containing the components (A) to (D) and the second destaining agent containing the component (E) are filled in separate containers and stored until use. At this time, the destaining second agent is a solid composition such as powder or granules. Therefore, the storage stability of the component (E) can be sufficiently obtained as compared with the case where the component (E) is dissolved in a solvent and stored as a solution.
At the time of use, a destaining mixture is obtained by first mixing and preparing a destaining second agent stored and sealed in a destaining first agent housed and stored in an applicator. And the said destaining mixture is applied to hair using the applicator used at the time of mixing as it is. Examples of the applicator for storing and storing the first destaining agent include a nozzle type applicator. The applicator is a unit in which a container body for containing the first dyeing agent and mixing with the second dyeing agent and an applicator such as a nozzle for applying the destaining mixture to the hair are integrated. Say.
Next, the destaining mixture is applied to hair that has been subjected to hair dyeing treatment with an oxidative hair dye using the nozzle type applicator or the like.
Here, the polynuclear compound dyeing the hair is depolymerized by the reducing action of the component (E). At this time, when the polynuclear compound is depolymerized, the color development is easily lost due to the loss of color.
Thereafter, the destaining mixture is washed away and air dried.

According to the embodiment described in detail above, the following effects are exhibited.
(1) In the hair decoloring agent composition of the present embodiment, the first agent contains (B) a water-soluble polymer compound. Thereby, a viscosity can be produced in the destaining first agent.

  (2) In the hair decoloring agent composition of this embodiment, (D) solvent is contained in the decoloring 1st agent. Thereby, the permeability to the hair of an active ingredient can be improved.

  (3) In the hair decoloring agent composition of the present embodiment, (A) water, (B) a water-soluble polymer compound, (C) a chelating agent, and (D) a solvent are contained in the first dyeing agent. ing. When comprised in this way, the long-term stability of the viscosity of a 1st agent can be improved by the synergistic effect of (B) component and (C) component. Thereby, sufficient adhesiveness to hair can be maintained even after long-term storage. For this reason, the effect of (D) component can fully be exhibited and favorable decoloring property can be acquired.

  (4) In the hair destaining composition of this embodiment, it is preferable to mix | blend benzyl alcohol as (D) component in a 1st agent. Thereby, since the penetration property of the active ingredient into the hair can be improved, the decoloring property can be further improved.

  (5) In the hair decoloring agent composition of this embodiment, it is preferable to mix | blend carboxymethylcellulose of 1.8-3.0 etherification degree as (B) component. Thereby, the long-term stability of the viscosity can be further improved.

In addition, you may change the said embodiment as follows.
-In the said embodiment, it comprised as 2 agent type | formula containing each component which comprises a hair decoloring agent composition. However, each component may be separated into a multi-drug form and mixed immediately before use.
-The application method to hair is not particularly limited, and an application method using a comb or a brush, an application method using a hand comb, an application method using a comb-integrated applicator, an application method using spraying, etc. can be used. .

Next, the embodiment will be described more specifically with reference to examples and comparative examples.
(Examples 1-10, Comparative Examples 1-6) Hair Decoloring Agent Composition The first and second agents of the oxidative hair dye shown below are mixed at a ratio of 1: 1 to make medium brown hair human hair. It was left for 20 minutes after application, washed away and dried to obtain a hair-dyed hair bundle.
<Oxidative hair dye>
(First agent) Mass%
p-Phenylenediamine 0.5
5-Aminoorthocresol 0.5
28% ammonia water 1.5
Ascorbic acid 1.5
Polydimethyldimethylmethylenepiperidinium chloride 1.0
Sodium lauryl sulfate 2.0
Stearyl alcohol 10.0
Polyoxyethylene (30) stearyl ether 10.0
EDTA-2Na 1.0
Purified water balance (second agent)
Hydrogen peroxide (35% by weight aqueous solution) 5.7
Sodium stannate 0.1
Cetanol 2.0
Sodium lauryl sulfate 0.5
Purified water balance

  Each component shown in Table 1 was mixed to prepare the first dyeing agent and the second dyeing agent of Examples 1 to 10 and Comparative Examples 1 to 6, thereby obtaining a hair destaining agent composition. Subsequently, the destaining first agent and the destaining second agent in each Example and Comparative Example were mixed and prepared at a mass ratio of 10: 1 to obtain a destaining mixture. These decolorization mixtures were applied to the hair-dyed hair bundle using a nozzle type applicator, left at room temperature for 30 minutes, rinsed and dried. About this decoloring treatment hair bundle, the decoloring property was evaluated. Moreover, about the time of the destaining mixture preparation, the mixing property of the destaining first agent and the destaining second agent was also evaluated. Furthermore, when the destaining mixture was applied to the hair, the destaining mixture dripped from the hair, and the skin irritation to the scalp and the like was also evaluated. Also, the evaluation of the change in viscosity immediately after the preparation of the first destaining dye and after long-term storage (viscosity long-term stability) and the change in the de-coloring immediately after preparation of the destaining mixture and after long-term storage (long-term destaining) went. The evaluation results are shown in Table 1. In addition, the unit of the numerical value which shows content of each component in Table 1 is the mass%.

<Mixability>
After mixing and preparing the destaining first agent and the destaining second agent in each of the examples and comparative examples, the destaining second agent was added to the destaining first agent and then gently shaken 10 times. The panel was visually evaluated by the panel to visually evaluate the degree of mixing: ◎, almost uniformly mixed: ○, slightly difficult to mix, powder left: △, difficult to mix lump The state remained: x, and the evaluation result of powder mixing property.

<Sagging>
In the destaining mixture prepared by mixing the destaining first agent and the destaining second agent in each of the examples and comparative examples, the paneler visually evaluates the state of dripping from the hair when applied to the hair. Thus, there was no dripping at all: ◎, almost no dripping: ○, there was some dripping: Δ, many drippings: x, and the evaluation result of the powder mixing property.

<Long-term viscosity stability>
In the first destaining agent of each Example and Comparative Example, the viscosity immediately after preparation was measured using a VISCOMETER TV-10 viscometer (manufactured by Toki Sangyo Co., Ltd.) at 25 ° C., rotation speed: 12 rpm, No. 3 rotor (viscosity Up to 5000 mPa · s), and measured under conditions using a No. 4 rotor (viscosity of 5000 mPa · s or more). Moreover, after storing the said decoloring 1st agent at 40 degreeC for 6 months, the viscosity was measured similarly. By evaluating the change in viscosity after 6 months at 40 ° C., there is no change in viscosity at all: 5, very little change in viscosity: 4, almost no change in viscosity: 3, some change in viscosity: 2, change in viscosity Is large, and the evaluation result of the long-term stability of the viscosity is set as a five-step evaluation.

<Destaining>
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. The L ^* a ^* b ^* values of the above-mentioned hair dye-treated hair bundle and the de-dyed hair bundle were compared, and the degree of destaining (ΔE _i ) was calculated by the following equation (1).
ΔE _i = {(L _i −L ₀ ) ² + (a _i −a ₀ ) ² + (b _i −b ₀ ) ² } ^1/2 (1)
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 ₁ ) (%) Was calculated. The larger the calculated value, the better the decolorization.
D ₁ = (1−ΔE ₂ / ΔE ₁ ) × 100 (2)

<Long-term decontamination>
Destaining degree after long-term storage for the destaining mixture prepared by mixing the two agents after storing the destaining first agent and destaining second agent for 6 months at 40 ° C. _{(D 2)} was measured. Thereafter, the degree of change in destaining (ΔD) was calculated by the following equation (3) by comparing the ΔE values of the hair bundles before and after long-term storage and the hair bundle after long-term storage. It shows that long-term decoloring property is excellent, so that the calculated numerical value is small.
ΔD = D ₁ −D ₂ (3)
D ₁ : Destaining value before long-term storage D ₂ : Destaining value after long-term storage In the ΔD value, values are 3 or less: ◎, 3-7: ○, 7-15: Δ, 15 or more: × It was set as the evaluation result of long-term decoloring property.

<Skin irritation>
Each of the examples and comparative examples, the destaining mixture prepared by mixing the destaining first agent and the destaining second agent, was soaked uniformly in a 2.5 cm square lint cloth, 0.5 mL each, and a test subject who is a healthy person It was affixed to the forehead part of 10 persons for 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, it was shown that when the components (A) to (E) in each Example were contained, good results were obtained for each evaluation item.

Claims (5)

A hair depigmenting agent composition in which the first agent and the second agent are mixed and prepared at the time of use, and the first agent and the second agent contain the following components , and the pH at the time of use is 2.0. Hair decoloring agent composition characterized by being -5.0 .
First agent: (A) Water, (B) Water-soluble polymer compound, (C) Chelating agent and (D) Benzyl alcohol Second agent: (E) Ascorbic acids A hair depigmenting agent composition in which the first agent and the second agent are mixed and prepared at the time of use, and the first agent and the second agent contain the following components, and the pH at the time of use is 2.0. hair, destaining composition you being a 5.0.
First agent: (A) water, (B) xanthan gum, (C) chelating agent and (D) solvent
Second agent: (E) Ascorbic acids Furthermore, carboxymethylcellulose is mix | blended as (B) component , The hair decoloring agent composition of Claim 2 characterized by the above-mentioned. The hair decoloring composition according to claim 3, wherein the degree of etherification of the carboxymethylcellulose is 1.8 to 3.0 . A hair depigmenting agent composition in which the first agent and the second agent are mixed and prepared at the time of use, and the first agent and the second agent contain the following components, and the pH at the time of use is 2.0. Hair decoloring agent composition characterized by being -5.0 .
First agent: (A) water, (B) carboxymethyl cellulose having a degree of etherification of 1.8 to 3.0, (C) a chelating agent, and (D) a solvent.
Second agent: (E) Ascorbic acids