JP2972087B2 - Hair treatment agent - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hair treatment agent containing hydrogen peroxide, which is used as a decolorizing agent for hair or a hair dye.

[0002]

2. Description of the Related Art As a hair treatment agent containing hydrogen peroxide, there are a decolorizing agent for hair, a second agent for oxidative hair dye, a second agent for permanent wave, and the like. It is very difficult to ensure the stability of these products, and various stabilizers have been studied in the past. Until now, stabilizers were urea,
Although resorcin, phenacetin, 8-oxyquinoline, acetanilide, acetaminophen, and various sequestering agents are known, satisfactory stability has not yet been obtained.

[0003]

Further, in a preparation containing hydrogen peroxide, there is a danger that the container may be ruptured even if it is decomposed even by only a few percent, and a stabilizing agent which hardly decomposes has been studied. Was needed.

[0004]

The present inventors have studied combinations of various stabilizers and found that when phenacetin and 1-hydroxyethane-1,1-diphosphonic acid or a salt thereof were combined, metal ions could not be eliminated. It has been found that the activation effect is particularly high, and the synergistic effect dramatically improves the stability of hydrogen peroxide. Moreover, the decolorizing agent, the second agent for the hair dye and the second agent for the permanent wave
It has also been found that when used as a hair treatment agent such as an agent, it has the unexpected effect of preventing damage to the hair, suppressing reddish bleaching, and providing a natural color tone.

The amount of hydrogen peroxide used in the present invention is 0.1 to 10% by weight. If the amount is less than 0.1% by weight, a sufficient oxidation effect cannot be obtained. Risk of hair damage.

The amount of phenacetin used in the present invention is from 0.001 to 5% by weight, and if it is less than 0.001% by weight, it has sufficient stability, bleaching power, natural color tone, and effect of preventing hair damage. Is not obtained, and even if it exceeds 5% by weight, no further effect is obtained, so that it is not economical. The lower limit of the compounding amount is preferably 0.02% by weight. By adding 0.02% by weight or more, more excellent stability, bleaching power, natural color tone, and an effect of preventing hair damage can be obtained. The upper limit is preferably 1% by weight, and when it exceeds 1% by weight, stability, bleaching power,
The natural color tone and the increase in the effect of preventing hair damage are reduced.

The amount of 1-hydroxyethane-1,1-diphosphonic acid or a salt thereof used in the present invention is 0.0
When the amount is less than 0.001% by weight, sufficient stability, bleaching power, natural color, and the effect of preventing hair damage cannot be obtained. It is not economical because no effect is obtained. The lower limit of the amount is preferably 0.02% by weight,
By blending 2% by weight or more, better stability,
A bleaching power, a natural color tone, and an effect of preventing hair damage are obtained. The upper limit is preferably 3% by weight, and if it exceeds 3% by weight, the stability, the bleaching power, the natural color tone, and the increase in the effect of preventing hair damage are reduced. As the salt, for example, a tetrasodium salt is used.
Henkel Hakusui Co., Ltd.'s Terminal S
L, 4NL, Lion Corporation's Ferriox 11
5,116 and the like.

[0008] The hair treatment composition of the present invention, by simultaneously mixing phenacetin and 1-hydroxyethane-1,1-diphosphonic acid or a salt thereof, inactivates metal ions and dramatically improves the stability of hydrogen peroxide. In addition, when used as a hair treatment agent such as a bleaching agent, a second agent for a hair dye, and a second agent for a permanent wave, it is possible to prevent damage to the hair and decolorize to a reddish color. Suppress, and can be adjusted to a natural color tone.

The hair treating agent of the present invention is used as a decolorizing agent for hair, a second agent for oxidative hair dye, an acidic hair dye, a second agent for permanent wave, a setting agent for hair, and the like. The dosage form is liquid, cream, paste, gel, or aerosol foam.

[0010] In addition, the hair treatment composition of the present invention includes surfactants, solvents such as ethanol, benzyl alcohol and pyrrolidone, organic acids, inorganic acids, oils, silicones, humectants,
A setting agent, a resin, a dye, a pigment, a fragrance, an ultraviolet absorber, and the like can be appropriately compounded.

[0011]

EXAMPLES Next, the present invention will be described in more detail with reference to examples, but the present invention is not limited to the contents of the following examples unless it exceeds the gist.

The bleaching agents of Example 1 and Comparative Examples 1 to 5 in Table 1 were prepared and evaluated for stability, bleaching power, color tone and hair damage according to the following criteria. Table 2 shows the results.

[0013]

[Table 1]

<Evaluation Method> Stability test of hydrogen peroxide The bleaching agents of Example 1 and Comparative Examples 1 to 5 were stored in a thermostat at 40 ° C. for 6 months, and the residual ratio of hydrogen peroxide was measured. The quantification method was based on a redox titration method. 2. Bleach force 5 g of each of the bleaching agents of Example 1 and Comparative Examples 1 to 5 was applied to 5 g of a human black hair bundle, dried with a drier, allowed to stand for 1 hour, and washed with a 10% aqueous solution of sodium lauryl sulfate. This operation was repeated five times, and the untreated hair bundle and the lightness were compared. ◎: considerably brighter than the original hair ○: brighter than the original hair △: slightly brighter than the original hair ×: almost the same brightness as the original hair Color Tone Comparison The color tone of the hair bleached in the bleaching force test was evaluated according to the following criteria. ◎: Natural color tone ○: Slightly reddish color tone △: Reddish color tone ×: No change (no change in color tone because brightness is unchanged from original hair) Hair Damage Degree Test Tensile strength of hair bleached in the bleaching force test was measured and the degree of damage was compared. The tensile strength of hair having the same thickness was measured by a tensile tester. The measured value of the untreated hair was defined as 100%, and the ratio of the measured value of the decolorized hair to the measured value was calculated and evaluated as follows. ◎: 95% or more ○: 90% or more, less than 95% △: 85% or more, less than 90% ×: less than 85%

[0015]

[Table 2]

Example 2 Hair dye second agent weight% aqueous hydrogen peroxide (35%) 16.0 phenacetin 0.05 1-hydroxyethane-1,1-diphosphonic acid 0.3 cetostearyl alcohol 1.2 flow Paraffin 0.5 Polyoxyethylene alkyl phenyl ether 0.5 Hydroxyethyl cellulose dimethyl diallyl ammonium chloride 0.4 Stearyl trimethyl ammonium chloride 0.5 Sodium phosphate 0.2 Purified water Appropriate amount Hair dye 1st agent Polyoxyethylene alkyl phenyl ether 20.0 oleic acid 8.0 2-octyldodecanol 2.5 ethanol 12.0 ammonia 5.0 p-phenylenediamine 1.2 resorcin 0.5 m-aminophenol 0.3 sodium sulfite 0.5 fragrance 0. 3 Suitable amount of purified water The first part and the second part of the hair preparation were mixed at a ratio of 1: 1. The mixture was applied to the hair bundle and allowed to stand for 30 minutes. After washing, the hair was dyed blackish brown with a natural color tone.

Example 3 Weight% Hydrogen peroxide (35%) 8.0 Phenacetin 0.1 1-Hydroxyethane-1,1-diphosphonic acid 0.2 1-Hydroxyethane-1,1-diphosphonic acid tetrasodium 0.4 Cetanol 1.0 Dimethyl silicon 0.5 Polyoxyethylene alkyl ether 1.5 Glycerin 2.0 LPG 8.0 Fragrance trace amount Purified water Appropriate amount The aerosol foam-type bleaching agent of the present invention is applied to the hair bundle for 30 minutes. After standing and washing, it bleached to a natural color.

Example 4 Weight% Hydrogen Peroxide (35%) 10.0 Phenacetin 0.3 1-Hydroxyethane-1,1-diphosphonic acid tetrasodium 0.5 Hydroxyethylcellulose hydroxypropyltrimethylammonium chloride ether 1.0 Vinylpyrrolidone / styrene copolymer 2.5 Octyl gallate 0.3 2-Ethylhexyl paramethoxycinnamate 0.03 Urea 0.1 Methylpolysiloxane 1.0 Maltitol 2.0 Glycolic acid 0.1 Purified water Appropriate amount The hair setting agent of the present invention did not damage the hair, had an excellent bleaching effect, and obtained a good setting effect.

Example 5 Weight% Hydrogen Peroxide (35%) 10.0 Phenacetin 0.08 1-Hydroxyethane-1,1-diphosphonic acid 0.8 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 201 0.1 Purple 402 0.1 Phenyl salicylate 0.03 Purified water Appropriate amount The color rinse of the present invention is hair There was no damage, the comb was good, and the hair could be dyed in a natural color.

[0020]

EFFECT OF THE INVENTION The hair treatment agent of the present invention is extremely excellent in stability of hydrogen peroxide and is used as a hair treatment agent such as a decolorizing agent, a second agent for a hair dye and a second agent for a permanent wave. In this case, it is possible to prevent the hair from being damaged, to suppress the decolorization to red, and to adjust the color to a natural color.

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) A61K 7/06 A61K 7/13 A61K 7/135

Claims (2)

(57) [Claims] 1. A hair treatment composition containing hydrogen peroxide, comprising phenacetin and 1-hydroxyethane-1,1.
-A hair treatment agent characterized by incorporating diphosphonic acid or a salt thereof. 2. A hair treatment agent containing hydrogen peroxide.
And 1-hydroxyethane-1,1-diphosphonic acid or
Mixes the salt and makes it aerosol foam.
Characteristic hair treatment agent.