JP2003201219A - Hydrogen peroxide-containing composition and method for stabilizing hydrogen peroxide - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hydrogen peroxide-containing composition having excellent long period stability and excellent safety, and to provide a method for stabilizing the hydrogen peroxide, by which the stability of the hydrogen peroxide in the hydrogen peroxide-containing composition can be retained for a long period. <P>SOLUTION: This hydrogen peroxide-containing composition comprises the hydrogen peroxide and (A) at least one of pyrrolidonecarboxylic acid and its derivatives, and the method for stabilizing the hydrogen peroxide is characterized by adding at least one of the pyrrolidonecarboxylic acid and its derivatives as a hydrogen peroxide-stabilizing agent to the hydrogen peroxide-containing composition. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hydrogen peroxide-containing composition, and more particularly to a hydrogen peroxide-containing composition which is used as a hair cosmetic, particularly as a hair bleaching agent, a hair dye or an oxidizing agent for permanent wave agents. The present invention relates to a composition and a method for stabilizing hydrogen peroxide.

[0002]

2. Description of the Related Art Hydrogen peroxide is an unstable compound and easily decomposes into water and oxygen, so that it is difficult to maintain the stability of a hydrogen peroxide-containing composition for a long period of time. Therefore, various stabilizers have been studied so far in order to prevent decomposition of hydrogen peroxide. Urea, phenacetin, sodium stannate, ethylene glycol phenyl ether, 8-oxyquinoline, phosphoric acid and the like are known as such stabilizers.

Among the hydrogen peroxide-containing compositions, the hair treatment agents include one-part hair bleaching agents, two-part or three-part hair bleaching agents, second agents, oxidative hair dye second agents, permanent agents. A second agent for waving agents and the like can be mentioned, and these hair treatment agents also contain the above-mentioned various stabilizers.

[0004]

However, even if the above-mentioned stabilizers are used, the long-term stability is still not sufficient. Further, depending on the stabilizers used, hair dyes and permanent agents may be used. When used as a wave agent, the hair dyeing effect and the permanent wave effect were sometimes reduced.

The present invention has been made by paying attention to the problems existing in the above-mentioned prior art, and an object of the present invention is to provide a hydrogen peroxide-containing composition excellent in long-term stability and to provide a peroxide. It is an object of the present invention to provide a method for stabilizing hydrogen peroxide capable of maintaining the stability of hydrogen peroxide in a hydrogen-containing composition for a long period of time.

[0006]

To achieve the above object, the invention according to claim 1 provides a hydrogen peroxide-containing composition comprising at least one selected from (A) pyrrolidonecarboxylic acid and its derivatives. The main point is to contain it. The gist of the invention described in claim 2 is that the hydrogen peroxide-containing composition according to claim 1 contains a pyrrolidonecarboxylic acid ester as the component (A).

The invention according to claim 3 is the invention according to claim 1 or 2.
The hydrogen peroxide-containing composition as described in 1.
The gist is to adjust the pH to 2 to 7 by containing an H adjuster. The invention according to claim 4 is the hydrogen peroxide-containing composition according to claim 3, wherein the component (B) contains at least one selected from phosphoric acid, citric acid, hydroxyethanediphosphonic acid and salts thereof. The point is to do.

The invention according to claim 5 provides a hydrogen peroxide-containing composition, wherein (A) is used as a stabilizer for hydrogen peroxide.
A method for stabilizing hydrogen peroxide, characterized in that at least one selected from pyrrolidonecarboxylic acid and its derivative is contained. A sixth aspect of the present invention is summarized in the method for stabilizing hydrogen peroxide according to the fifth aspect, further comprising (B) a pH adjusting agent to adjust the pH to 2 to 7.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION The content of hydrogen peroxide in the hydrogen peroxide-containing composition of the present invention is not particularly limited, but is a hair decolorizing agent, an oxidative hair dye second agent, a permanent wave agent. When used as a hair cosmetic such as a second agent, it is usually 0.1 to 15% by weight.

Examples of (A) pyrrolidonecarboxylic acid and its derivative used in the present invention include pyrrolidonecarboxylic acid, pyrrolidonecarboxylic acid salt, and pyrrolidonecarboxylic acid ester.

Examples of the pyrrolidonecarboxylic acid salt include alkali metal salts such as sodium salt and potassium salt, triethanolamine salt, chitosan salt, salts with basic amino acids such as lysine and arginine, and the like.

As the pyrrolidone carboxylic acid ester,
Ethyl pyrrolidone carboxylic acid, cetyl pyrrolidone carboxylic acid, lauryl pyrrolidone carboxylic acid, octyl pyrrolidone carboxylic acid, polyoxyethylene glyceryl isostearate pyroglutamic acid, hydroquinone pyrrolidone carboxylic acid, inositate hexapyrrolidone carboxylic acid,
Menthyl pyrrolidonecarboxylate, methylsilanol pyrrolidonecarboxylate, glyceryl oleate pyroglutamate and the like can be mentioned.

Of these, pyrrolidone carboxylic acid ester is preferable in terms of stability. More preferable are pyrrolidone carboxylic acid alkyl esters such as cetyl pyrrolidone carboxylic acid, octyl pyrrolidone carboxylic acid, ethyl pyrrolidone carboxylic acid and lauryl pyrrolidone carboxylic acid.

The blending amount is 0.001 to 10% by weight, and if it is less than 0.001% by weight, sufficient stability cannot be obtained, and if it exceeds 10% by weight, no further effect can be obtained. Not economical.

Further, the hydrogen peroxide-containing composition of the present invention comprises
(B) By containing a pH adjuster and adjusting the pH within the range of 2 to 7, better stability can be obtained.
As the pH adjuster used here, a commonly used organic acid or inorganic acid can be used, and for example, citric acid, glycolic acid, succinic acid, tartaric acid, lactic acid, fumaric acid, malic acid, levulinic acid, Butyric acid, valeric acid, oxalic acid,
Examples thereof include organic acids such as maleic acid and mandelic acid, and inorganic acids such as phosphoric acid, hydrochloric acid, sulfuric acid and nitric acid. It is also possible to give a buffering function to the system by combining these acids with sodium salt, potassium salt, ammonium salt or the like of the acid. Further, chelating agents such as ethylenediamine hydroxyethyl triacetate trisodium, edetic acid and its salt, hydroxyethanediphosphonic acid and its salt (sodium salt, etc.) can be used as a pH adjuster.

Among these, it is preferable to use at least one selected from phosphoric acid, citric acid, hydroxyethanediphosphonic acid and salts thereof. Further, it is more preferable from the viewpoint of stability that it has a buffering ability by a combination with a salt.

The hydrogen peroxide-containing composition of the present invention further contains components other than the above-described components depending on its use and dosage form.

First, the hydrogen peroxide-containing composition of the present invention is used as a one-component hair bleaching agent, a two-component or three-component hair bleaching / decoloring agent second agent, and an oxidative hair dyeing agent. 2 agents, 2nd agent for permanent wave, shampoo, rinse, treatment, styling agent and the like. Examples of the dosage form of the hydrogen peroxide-containing composition of the present invention include liquid, gel, cream, foam, spray and the like.

The components to be added to the hydrogen peroxide-containing composition according to these uses and dosage forms include anionic surfactants, cationic surfactants, nonionic surfactants and amphoteric surfactants. Examples include agents, anionic polymers, cationic polymers, nonionic polymers, amphoteric polymers, solvents and oily components.

Specific examples of the anionic surfactant include:
Sodium lauryl sulfate, polyoxyethylene (hereinafter,
POE) sodium lauryl ether sulfate, sodium stearoylmethyl taurine, triethanolamine dodecylbenzene sulfonate, sodium tetradecene sulfonate, POE lauryl ether phosphate, and salts thereof.

Specific examples of the cationic surfactant include:
Lauryl trimethyl ammonium chloride, stearyl trimethyl ammonium chloride, alkyl trimethyl ammonium chloride, distearyl dimethyl ammonium chloride, cetyl trimethyl ammonium bromide, stearyl trimethyl ammonium bromide, lanolin fatty acid aminopropylethyl dimethyl ammonium sulphate, stearyl trimethyl ammonium saccharin, cetyl trimethyl Examples thereof include ammonium saccharin.

Specific examples of the nonionic surfactant include:
POE alkyl ethers, POE alkyl phenyl ethers, POE / polyoxypropylene (hereinafter, PO
P) alkyl ethers, POE fatty acids, PO
E sorbitan fatty acid esters, POE castor oil, PO
E hydrogenated castor oil, POE sorbitol tetra fatty acid ester, glycerin fatty acid ester, sorbitan fatty acid ester, polyglycerin fatty acid ester, sucrose fatty acid ester, alkyl polyglycoside, N-alkyl dimethyl amine oxide, POE propylene glycol fatty acid ester and the like can be mentioned.

Specific examples of the amphoteric surfactant include 2-undecyl-N, N, N- (hydroxyethylcarboxymethyl) -2-imidazoline sodium and 2-cocoyl-2-imidazolinium hydroxide-1-carboxy. Ethyloxy disodium salt, 2-heptadecyl-N-
Examples thereof include carboxymethyl-N-hydroxyethylimidazolinium betaine, cocoamidopropyl betaine, lauryldimethylaminoacetic acid betaine, and lauramidopropyl betaine.

As the anionic polymer compound, acrylic acid / acrylic acid amide / ethyl acrylate copolymer,
Acrylic acid / acrylic acid amide / ethyl acrylate copolymer potassium salt solution, acrylic acid alkyl ester / methacrylic acid alkyl ester / diacetone acrylamide / methacrylic acid copolymer solution, acrylic acid / alkyl methacrylate copolymer, acrylic resin alkanol Amine solution, carboxyvinyl polymer, hydroxypropyl acrylate, butylaminoethyl methacrylate, octylamide acrylic acid copolymer, vinyl acetate / crotonic acid copolymer, vinyl acetate / crotonic acid / vinyl neodecanoate copolymer, acetic acid Examples thereof include vinyl / crotonic acid / vinyl propionate copolymers and methyl vinyl ether / maleic acid monobutyl ester copolymers.

The cationic polymer compound contains an amino group or an ammonium group bonded to the polymer chain,
Alternatively, it is an aqueous solution containing at least dimethyldiallylammonium halide as a constitutional unit, and examples thereof include cationized cellulose derivative, cationic starch, cationized guar gum derivative, diallyl quaternary ammonium salt polymer, diallyl quaternary ammonium salt / acrylamide copolymer. And quaternized polyvinylpyrrolidone derivatives. Commercially available cationized cellulose derivatives include Leoguard G and GP of Lion Co., Ltd. and polymers JR-125, JR-400 and J of Union Carbide.
R-30M, LR-400, LR-30M, etc. are mentioned. Other cationized cellulose derivatives include hydroxyethyl cellulose dimethyldiallylammonium chloride, and commercially available products include Cell Coat H-100 and L-20 manufactured by National Starch and Chemical Co.
0 etc. are mentioned. Examples of the cationized guar gum derivative include Japanese Patent Publication No. 58-35640 and Japanese Patent Publication No. 60-
No. 46158 and JP-A No. 58-53996, Jaguar C-13S, same-manufactured by RHONE-POULENC.
14S, same-17, same-210, same-162, HI-C
It is commercially available as ARE1000. As the cationic diallyl quaternary ammonium salt polymer, commercially available products such as Marcoat 100 manufactured by Calgon Co., Ltd. may be mentioned. As the diallyl quaternary ammonium salt / acrylamide copolymer, commercially available product is Calgon's Marcoat 550.
Etc. The quaternized polyvinylpyrrolidone derivative preferably has a molecular weight of 10,000 to 2,000,000, and examples of commercially available products include Guffcoat 734, 755, 755N manufactured by ISPE Japan K.K.

Examples of the nonionic polymer compound include natural compounds, semi-synthetic compounds and synthetic compounds. Examples of natural nonionic polymer compounds include cellulose, guar gum, agar, starch, hydrolyzed starch and dextrin. Examples of the semi-synthetic nonionic polymer compound include methyl cellulose, ethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, hydroxypropyl methyl cellulose, carboxymethyl dextran and carboxymethyl chitin. Furthermore, synthetic nonionic polymer compounds include polyethyl acrylate, polyacrylic acid amide, polyethylene glycol, polypropylene glycol, polyoxyethylene (hereinafter referred to as POE).
Polyoxypropylene (hereinafter referred to as POP) copolymer, POE / POP butyl ether, POE / POP hexylene glycol ether, POP butyl ether,
Polyvinylpyrrolidone, POE monostearate and P
OE distearate etc. are mentioned.

Examples of the amphoteric polymer compound include N-
Methacryloylethyl N, N-dimethylammonium α
-N-methylcarboxybetaine / butyl methacrylate copolymer (commercial name; Yucaformer AM-75; manufactured by Mitsubishi Chemical Co.), hydroxypropyl acrylate / butylaminoethyl methacrylate / octylamide acrylic acid copolymer (commercial name; Amphomer 28-4910; manufactured by National Starch Co., Ltd., dimethyldiallylammonium chloride / acrylic acid copolymer (commercial name: Mercoat 280,2)
95; Calgon Co., Ltd.), dimethyldiallylammonium chloride / acrylamide / acrylic acid terpolymer (commercial name: Marcoat Plus 3330, 3331; Calgon Co.), acrylic acid / methyl acrylate / methacrylamide propyltrimethylammonium chloride copolymer (Commercial name: Marcoat 2001; manufactured by Calgon Co., Ltd.) and the like.

Examples of the solvent include lower alcohols such as ethanol, n-propanol and isopropanol, polyhydric alcohols such as ethylene glycol, propylene glycol, isoprene glycol, 1,3-propanediol, 1,3-butylene glycol, glycerin and polyethylene glycol. Alcohol, methyl cellosolve, ethyl cellosolve,
Ethylene glycol ethers such as methyl carbitol and ethyl carbitol, benzyl alcohol, phenethyl alcohol, γ-phenylpropyl alcohol, cinnamic alcohol, anis alcohol, p-methylbenzyl alcohol, α-dimethylphenethyl alcohol, α-phenylethanol, phenoxyethanol, Examples include phenoxyisopropanol, aromatic alcohols such as 2-benzyloxyethanol, N-alkylpyrrolidones such as N-methylpyrrolidone, N-octylpyrrolidone and N-laurylpyrrolidone, and alkylene carbonates such as ethylene carbonate.

Specific examples of the oily component include hydrocarbons, fats and oils, waxes, higher alcohols, higher fatty acids, alkyl glyceryl ethers, esters, silicones and the like.

Examples of the hydrocarbon include α-olefin oligomer, liquid paraffin, ozokerite, ceresin, paraffin, polyethylene powder, petrolatum, light isoparaffin, light liquid isoparaffin, liquid isoparaffin, squalane, squalene, polybutene, and microcrystalline wax. .

The oils and fats include olive oil, camellia oil, tea seed oil, southern oil, safflower oil, sunflower oil, soybean oil, cottonseed oil, sesame oil, beef tallow, cacao butter, corn oil, peanut oil, rapeseed oil, rice bran oil, Rice germ oil, wheat germ oil, pearl barley oil, grape seed oil, almond oil,
Examples include avocado oil, carrot oil, macadamia nut oil, castor oil, linseed oil, coconut oil, mink oil, egg yolk oil and the like.

Examples of the waxes include beeswax, candelilla wax, carnauba wax, jojoba oil, lanolin and the like.

The higher alcohols include lauryl alcohol, myristyl alcohol, cetanol, stearyl alcohol, aralkyl alcohol, behenyl alcohol, 2-hexyldecanol, isostearyl alcohol, 2-octyldodecanol, decyltetradecanol, oleyl alcohol, linoleyl alcohol. , Linolenyl alcohol, lanolin alcohol and the like.

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

Examples of the alkyl glyceryl ether include batyl alcohol (monostearyl glyceryl ether), chymyl alcohol (monocetyl glyceryl ether), ceracyl alcohol (monooleyl glyceryl ether), isostearyl glyceryl ether and the like.

Examples of the esters include isopropyl myristate, hexyl laurate, cetyl lactate, oleyl oleate, hexadecyl 2-ethylhexanoate, octyldodecyl myristate and the like.

Examples of silicones include dimethylpolysiloxane, methylphenylpolysiloxane, methylcyclopolysiloxane, polyether-modified silicone, amino-modified silicone, betaine-modified silicone, alkyl-modified silicone and alkoxy-modified silicone.

Further, as other additive components, proteins such as collagen, keratin, elastin, fibroin, conchiolin, soybean protein, casein and gelatin are acid,
Hydrolysates hydrolyzed by alkalis, enzymes, etc., and quaternized cation-denatured proteins and other polypeptides; sorbitol, hyaluronic acid, and other humectants; parabens and other preservatives; thioglycolic acid, sulfites, etc. Antioxidant; Propellant such as liquefied petroleum gas, dimethyl ether, nitrogen, carbon dioxide gas; Other, at least one selected from amino acids, plant extracts, herbal extracts, vitamins, pigments, fragrances, pigments, UV absorbers, etc. You may mix.

The effects obtained by the present invention will be described below. (1) Since it contains at least one selected from (A) pyrrolidonecarboxylic acid and its derivative, the hydrogen peroxide-containing composition of the present invention can maintain the stability of hydrogen peroxide for a long period of time. . (2) When the pyrrolidone carboxylic acid ester is contained as the component (A), the effect of the above (1) can be improved.

(3) Further, the effects of (1) and (2) above can be improved by containing (B) a pH adjuster and adjusting the pH to 2 to 7. (4) If at least one selected from phosphoric acid, citric acid, hydroxyethanediphosphonic acid and salts thereof is contained as the component (B), the effect of the above (3) can be improved.

(5) When the hydrogen peroxide-containing composition of the present invention is used as a second agent for an oxidative hair dye, the above (1) to (4)
In addition to the effect of, does not reduce the hair dyeing effect. (6) When the hydrogen peroxide-containing composition of the present invention is used as the second agent of the permanent waving agent, the above (1) to
In addition to the effect of (4), the wave effect is not reduced.

(7) As a stabilizer for hydrogen peroxide,
By containing at least one selected from (A) pyrrolidonecarboxylic acid and its derivative, it is possible to provide a method for stabilizing hydrogen peroxide, which can maintain the stability of hydrogen peroxide for a long period of time.

[0043]

EXAMPLES Next, the present invention will be described more specifically with reference to Examples and Comparative Examples. <Examples 1 to 5 and Comparative Examples 1 to 4> Hydrogen peroxide-containing compositions having the compositions shown in Table 1 below were prepared. Regarding the hydrogen peroxide-containing composition of each example, stability of hydrogen peroxide, hair dyeing effect when used as a second agent for oxidative hair dye, and wave effect when used as a second agent for permanent wave agent Was measured and evaluated as follows.

[0044]

[Table 1]

(Hydrogen Peroxide Stability Test) The hydrogen peroxide-containing composition of each example was stored in a constant temperature bath at 50 ° C. for 1 month, and then stored in a constant temperature bath at 40 ° C. for 6 months, and then peroxidized. The residual rate of hydrogen was measured. The quantitative method was based on a redox titration method. The evaluation criteria are as follows.

Residual rate after storage at 50 ° C. for 1 month A: 99% or more, O: 98% or more and less than 99%, Δ: 96
% Or more and less than 98%, × ... less than 96% Residual rate after storage at 40 ° C. for 6 months ◎ ... 98% or more, ◯ ... 96% or more and less than 98%, Δ ... 94
% Or more and less than 96%, × ... less than 94%

[0047] (When used as the second agent of oxidative hair dye)   A first oxidative hair dye composition having the composition shown below was prepared. Oxidative hair dye 1st agent wt% POE (10) cetyl ether 20.0 Oleic acid 8.0 2-octyldodecanol 2.5 Stearyl trimethyl ammonium chloride 0.5 28% ammonia water 5.0 p-Phenylenediamine 1.2 Resorcin 0.5 m-aminophenol 0.3 Sodium sulfite 0.5 Fragrance 0.3 Purified water balance

Using the hydrogen peroxide-containing composition of each example as the second agent, the first agent and the second agent were mixed at a weight ratio of 1: 1 and then applied to the hair bundle. Regarding each hair bundle after the hair dyeing treatment, with respect to the dyeability and the hair color tone by a specialized panelist, a hair bundle treated with Comparative Example 3 (an example in which no stabilizer is blended) was used as a control, and Sensory evaluation was performed according to the standard.

⊚: No change in dyeability and hair color, ◯:
There is a slight change in hair dyeing color, but there is no problem, △: Dyeing property, change in hair dyeing color, ×: Different hair dyeing color

(When Used as Second Agent for Permanent Wave Agent) A first agent for permanent wave agent having the following composition was prepared. Permanent wave agent First agent Weight% Ammonium thioglycolate (50%) 9.0 Diammonium dithiodiglycolate (40%) 2.0 POE (20) Coconut oil fatty acid sorbitan 1.0 Ammonia 0.8 Monoethanol Amine 5.0 EDTA 0.2 Purified water balance

Using the hydrogen peroxide-containing composition of each example as the second agent, a usual bundle wave treatment was performed using a hair bundle. With respect to each hair bundle, a sensory evaluation was performed on the wave effect by a professional paneler according to the following criteria, using a hair bundle treated with Comparative Example 3 (example in which a stabilizer is not mixed) as a control.

Table 2 shows the results: ∘: No change in wave effect, ∘: Wave force slightly drops but no problem, Δ: Wave force drops, × ... Wave force drops considerably.

[0053]

[Table 2]

As shown in Table 2, each of the hydrogen peroxide-containing compositions of Examples had good stability of hydrogen peroxide. Moreover, when used as the second agent for the oxidative hair dye and the second agent for the permanent wave, the hair dyeing effect and the wave effect were not adversely affected.

[0055] Example 6 (hair bleaching agent) wt% Hydrogen peroxide water (35%) 12.0 Lauryl pyrrolidonecarboxylate 0.1 Hydroxyethanediphosphonic acid 0.1 Cetanol 1.0 Dimethyl silicon 1.0 POE (10) cetyl ether 2.0 Glycerin 2.0 Phosphoric acid adjusted to pH 3.5 LPG 8.0 Fragrance amount Purified water balance

An aerosol foam hair bleaching agent having the above composition was prepared and subjected to the above hydrogen peroxide stability test, and good results were obtained. In addition, when a usual bleaching treatment was performed using a hair bundle, the hair bleached to a natural color tone.

[0057] Example 7 (hair treatment) wt% Hydrogen peroxide water (35%) 8.5 Pyrrolidone carboxylic acid 0.1 Behenyl alcohol 3.0 Palmitic acid 2.0 Distearyl dimethyl ammonium chloride 0.5 EDTA 0.5 Phosphoric acid adjusted to pH 4.5 Purified water balance

Prepare a hair treatment of the above composition,
When the above hydrogen peroxide stability test was conducted, good results were obtained.

[0059] Example 8 (shampoo) wt% Hydrogen peroxide water (35%) 8.5 Pyrrolidone carboxylic acid 0.1 Lauric acid 1.0 Cetanol 1.5 Stearyl trimethyl ammonium chloride 1.0 Lauric acid dimethylaminoacetic acid betaine 5.0 N-lauroyl-L-glutamate sodium 5.0 Lauroyl N-methylalanine sodium 5.0 Cationized cellulose 1.0 Citric acid pH adjusted to 4.0 Purified water balance

When a shampoo having the above composition was prepared and the above-mentioned hydrogen peroxide stability test was conducted, good results were obtained.

[0061] Example 9 (color rinse)% by weight Hydrogen peroxide water (35%) 10.0 Lauryl pyrrolidonecarboxylate 0.1 Hydroxyethanediphosphonic acid 0.1 Hydroxypropyl methylcellulose 3.0 Hydrolyzed collagen 1.0 Propylene glycol 5.0 Triglucopolysaccharide 1.0 Tocopherol acetate 0.5 Ethanol 5.0 Benzyl alcohol 5.0 Red No. 201 0.1 Purple No. 402 0.1 Phenyl salicylate 0.03 Citric acid pH adjusted to 4.0 Purified water balance

When a color rinse having the above composition was prepared and subjected to the above hydrogen peroxide stability test, good results were obtained.

[0063]

According to the present invention, it is possible to provide a hydrogen peroxide-containing composition having excellent long-term stability, and to maintain the stability of hydrogen peroxide in the hydrogen peroxide-containing composition for a long period of time. It is possible to provide a method for stabilizing hydrogen peroxide that can be performed. Moreover, when used as a hair decolorizing agent, an oxidative hair dye second agent and a permanent wave agent second agent, the hair dyeing effect and the wave effect are not lowered.

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) A61K 7/135 A61K 7/135 C01B 15/037 C01B 15/037 EF term (reference) 4C083 AB011 AB012 AB082 AB352 AB411 AB412 AC012 AC072 AC092 AC102 AC122 AC152 AC182 AC242 AC252 AC301 AC302 AC402 AC472 AC522 AC542 AC552 AC662 AC692 AC712 AC762 AC772 AC792 AC851 AC852 AC891 AC892 AD132 AD152 AD212 AD432 AD662 BB41 BB44 CC31 CC33 CC34 CC31 CC38 CC39 EE01 EE01 EE07 EE26

Claims (6)

[Claims] 1. A hydrogen peroxide-containing composition comprising hydrogen peroxide and at least one selected from (A) pyrrolidonecarboxylic acid and its derivatives. 2. The hydrogen peroxide-containing composition according to claim 1, wherein the component (A) is a pyrrolidonecarboxylic acid ester. 3. The method further comprising (B) a pH adjusting agent,
The hydrogen peroxide-containing composition according to claim 1 or 2, wherein 4. The hydrogen peroxide-containing composition according to claim 3, wherein the component (B) is at least one selected from phosphoric acid, citric acid, hydroxyethanediphosphonic acid and salts thereof. 5. A hydrogen peroxide-containing composition containing hydrogen peroxide, comprising at least one selected from (A) pyrrolidonecarboxylic acid and its derivative as a stabilizer for hydrogen peroxide. Method for stabilizing hydrogen oxide. 6. The method further comprises (B) a pH adjusting agent,
The method for stabilizing hydrogen peroxide according to claim 5, wherein the method is adjusted to 7 to 7.