JPH1129451A - Pretreating agent for permanent wave and usage thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a pretreating agent for permanent waves capable of suppressing the reduction in lysine from hair based on the elution of the lysine from the interior of a constituent protein by perming treatment and reducing the damage to the hair. SOLUTION: This pretreating agent for permanent waves is prepared by including lysine or its hydrochloride. Hair is pretreated by using the pretreating agent for the permanent waves containing the lysine or its hydrochloride before treating the hair with the first agent for the permanent waves. The content of the lysine or its hydrochloride in the pretreating agent for the permanent waves is preferably 0.01-5 wt.% expressed in terms of the lysine.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

FIELD OF THE INVENTION The present invention relates to a permanent wave pretreatment agent and a method of using the same,
The present invention relates to a permanent wave pretreatment agent capable of suppressing the reduction of lysine based on the elution of lysine from constituent proteins of hair by permanent wave treatment and reducing damage to hair, and a method for using the same.

[0002]

2. Description of the Related Art Permanent wave treatment of hair with a permanent waving agent involves the use of a reducing agent such as thioglycolic acid or a salt thereof, cysteine or a hydrochloride thereof, and an alkaline agent such as ammonia, monoethanolamine or triethanolamine. Then, if necessary, a first agent for permanent wave, which is appropriately mixed with a wetting agent, a surfactant, a stabilizer, and the like, is applied to the hair, and the hair is wound around a rod or the like. The disulfide bond of cystine in keratin, which is a protein (protein), is reductively cleaved with the above-mentioned reducing agent, and then a second agent for permanent wave mainly containing an oxidizing agent such as sodium bromate and hydrogen peroxide is used to establish a new position. By reforming the disulfide bonds and immobilizing the waves. .

[0003]

As described above, in the waving treatment of the hair with the permanent waving agent, a reduction / oxidation reaction of the hair is carried out, so that a protein component is eluted from the hair, and thereby, Hair properties such as hair damage, loss of moisturizing property, flexibility, smoothness of hair surface, etc. And there is a problem that the feeling is lowered.

[0004] Therefore, oils such as lanolin and mink oil have been blended into the agent for permanent waving, but the elution of protein components from the hair cannot be avoided even by this. Could not be obtained.

[0005]

Means for Solving the Problems The inventors of the present invention have conducted intensive studies to solve the problems at the time of the permanent wave treatment as described above. As a result, the present inventors have found that the elution of protein components from the hair as described above has been achieved. It has been found that the hair damage based on lysine is particularly due to the reduction of lysine in the constituent proteins of the hair, and as a result of further studies to replenish lysine to the hair, lysine or its hydrochloride was subjected to permanent wave pretreatment After pre-treating the hair with a permanent wave pretreatment agent containing the lysine or its hydrochloride, when performing a permanent wave treatment, the reduction of lysine in the hair due to the permanent wave treatment is suppressed. The inventors have found that hair damage can be reduced thereby, and the present invention has been completed.

That is, if hair is pretreated with a permanent wave pretreatment agent containing lysine or a hydrochloride thereof of the present invention prior to the permanent wave treatment,
Since lysine or its hydrochloride forms a thin film and covers the hair, when subjected to permanent waving, lysine or its hydrochloride present on the hair is affected by the agent for permanent waving, and the hair in its hair It is believed that the elution of lysine from the hair is reduced, thereby reducing hair damage.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION In the present invention, lysine is
Both L-lysine and DL-lysine can be used, and as the hydrochloride of lysine, either monohydrochloride or dihydrochloride can be used.

The content of the lysine or its hydrochloride in the pretreatment agent for permanent wave is preferably 0.01 to 5% by weight, particularly 0.1 to 1% by weight in terms of lysine. When the content of lysine or its hydrochloride is less than the above range, the effect of suppressing the reduction of lysine in the hair by the permanent wave treatment is reduced, and when the content of lysine or its hydrochloride is more than the above range,
As a result, the effect is not increased, and the cost may be increased.

The permanent wave pretreatment agent of the present invention comprises water or water and alcohol as main solvents, in which the lysine or its hydrochloride is dissolved, and if necessary, inhibits the effect of the lysine or its hydrochloride. It is prepared by adding other components to the extent not to do so. Examples of the above-mentioned additives include various surfactants such as anionic surfactants, cationic surfactants, amphoteric surfactants, and nonionic surfactants, and thickeners such as carrageenan, xanthan gum, and various alkylolamides. Agent,
Propylene glycol, 1,3-butylene glycol,
Wetting agents such as glycerin and dichryserin, paraffin,
Fatty acid esters, oils and fats such as animal and vegetable oils, higher alcohols such as cetyl alcohol, stearyl alcohol and oleyl alcohol, hydrolysates of proteins and animals derived from animals and plants such as collagen, keratin, silk, soybean protein, wheat protein and derivatives thereof, and chelating agents , PH adjusters, fragrances and the like.

The permanent wave treatment after pre-treating the hair with the permanent wave pretreatment agent of the present invention can be carried out by using a normal permanent wave first agent and a permanent wave second agent. If lysine or its hydrochloride is contained in the first agent for permanent wave, more preferable results can be obtained.

[0011]

Next, the present invention will be described more specifically with reference to examples. However, the present invention is not limited to only these examples. Note that, in the following examples and the like,% indicating the concentration is% by weight.

Example 1 and Comparative Example 1 The permanent wave pretreatment agents of Example 1 and Comparative Example 1 were prepared with the compositions shown in Table 1. The amounts of each component in the table are parts by weight. The blending amount of L-lysine hydrochloride in Table 1 is an amount converted to lysine.

[0013]

[Table 1]

In addition, the following first and second agents were prepared as permanent wave agents for subjecting the hair pretreated with the above-mentioned permanent wave pretreatment agent to permanent wave treatment. All amounts are parts by weight.

First agent for permanent wave DL-cysteine hydrochloride 6.0 Ammonium thioglycolate (50%) 2.0 Monoethanolamine 4.2 Aqueous ammonia (25%) pH 9.3 Purified water 100 Do

Second agent for permanent wave Sodium bromate 5.0 Citric acid 0.3 Aqueous ammonia (25%) pH 5.0 Purified water Total 100

In the treatment with the above-mentioned permanent wave pretreatment agent and permanent wave agent,
As shown below, a hair bundle was prepared from untreated hair (unbleached human hair) and bleached hair.

Preparation of Hair Bundle: (Untreated Hair) A hair bundle weighing 0.5 g is prepared . Cleaning First, a 5.0 W / V% solution of polyoxyethylene (9) lauryl ether is prepared as a cleaning agent, and the hair bundle is immersed in 1 liter of the cleaning agent and washed with stirring for 30 minutes.

Rinse the washed hair bundle in 2 liters of purified water,
Stir for a minute. At this time, exchange the purified water three times. Drying The hair bundle after rinsing is air-dried.

(Bleach Hair) First, the untreated hair is washed and rinsed to prepare a hair bundle. 3.0 W / V% of hydrogen peroxide and 4.0 W / V% of aqueous ammonia (25%) were dissolved in purified water, and pH 10.2 was dissolved.
To prepare a bleaching agent. The hair bundle is immersed in 500 ml of the bleaching agent,
Let stand for minutes.

Next, the hair bundle is immersed in a 1N acetic acid aqueous solution at room temperature for 10 minutes. The hair bundle after the acetic acid treatment is immersed in 2 liters of purified water at room temperature and washed with stirring for 30 minutes. At this time, the purified water is exchanged three times. The hair bundle after the above-mentioned rinsing is air-dried.

After the hair bundles of untreated hair and bleached hair prepared as described above are wetted and cut to a length of 17 cm, the hair bundles are treated with a pretreatment agent for permanent wave as shown below. The treatment and the permanent wave treatment with the first agent for permanent wave and the second agent for permanent wave were performed.

Permanent Wave Pretreatment The above two types of hair bundles were separately coated with the permanent wave pretreatment agent of Example 1 and the permanent wave pretreatment agent of Comparative Example 1 in an amount of 0.5 g each, followed by 5 minutes at room temperature. Leave to complete the permanent wave pretreatment.

Permanent wave treatment The hair bundle after the above pretreatment is wound around a rod (diameter: 10 mm), 1 g of the first agent for permanent wave is applied to the hair bundle, left at room temperature for 15 minutes, washed with water, and then washed with water. After applying 0.5 g of the second agent for wave and leaving it to stand for 10 minutes, the second agent for permanent wave was added to 0.1 g again.
After applying 5 g and leaving it for 5 minutes, it was washed with water and dried naturally to complete the permanent wave treatment.

The results of amino acid analysis of the hair after the above treatment are shown in Tables 2 and 3. Table 2 shows the results of amino acid analysis of the untreated hair, and Table 3 shows the results of amino acid analysis of the bleached hair. In each case, the hair was not treated with the permanent wave pretreatment or the permanent wave treatment. The results of the amino acid analysis are shown as blanks. In displaying the results of each amino acid analysis, the results are shown in terms of conversion values based on leucine, which has little effect on acid / alkali treatment.

[0026]

[Table 2]

[0027]

[Table 3]

As is clear from the results shown in Tables 2 and 3, when both the untreated hair and the bleached hair were pretreated with the permanent wave pretreating agent of Example 1, Compared to the case of pretreatment with the permanent wave pretreatment agent, the decrease in lysine was small, and the flexibility of the hair after the permanent wave treatment was evaluated by 10 panelists. In the case where the hair was pretreated with the wave pretreatment agent, the hair was evaluated to be more flexible than in the case where the hair was pretreated with the permanent wave pretreatment agent of Comparative Example 1.

Next, the results obtained by examining the wave efficiency and the wave retention by the permanent wave processing are shown in Table 4. The method of obtaining the wave efficiency and the wave retention is as follows.

One end of the hair bundle after the permanent wave treatment is fixed to a panel and suspended, and the average wavelength L of the wave is set.
Is calculated from the average wavelength L and the rod diameter (10 mm) according to the following equation.

[0031]

Next, a weight having a weight of 9.5 g was attached to one end of the hair bundle after the permanent wave treatment, and the hair bundle was allowed to stand in an atmosphere at 40 ° C. and a relative humidity of 80% for 10 days. Is removed, and the wave efficiency is checked in the same manner as described above. From the wave efficiency after 10 days and the wave efficiency immediately after the permanent wave processing, the wave retention is checked by the following equation.

[0033]

[0034]

[Table 4]

As shown in Table 4, there was no significant difference in the wave efficiency and the wave retention between Example 1 and Comparative Example 1, and the permanent was obtained by pretreatment with the permanent wave pretreating agent containing lysine. There was no adverse effect on wave processing.

[0036]

As described above, the permanent wave pretreatment agent of the present invention can suppress the reduction of lysine in the hair due to the permanent wave treatment, thereby suppressing the decrease in the flexibility of the hair. Hair damage was reduced.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Katsumi Kanayama, 2-17-2 Akakawa, Asahi-ku, Osaka-shi Milbon Co., Ltd.

Claims (3)

[Claims] 1. A permanent wave pretreatment agent comprising lysine or a hydrochloride thereof. 2. The permanent wave treating agent according to claim 1, wherein the content of lysine or its hydrochloride is 0.01 to 5% by weight in terms of lysine. 3. A method for using a permanent wave pretreatment agent according to claim 1, wherein the permanent wave pretreatment agent according to claim 1 is used before using a first agent for permanent wave containing lysine or a hydrochloride thereof.