JP3382821B2 - Permanent wave pretreatment agent and method of using the same - Google Patents

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, and more specifically,
The present invention relates to a permanent wave pretreatment agent capable of suppressing the damage of hair by suppressing the decrease of lysine due to the elution of lysine from the constituent proteins of hair by the permanent wave treatment, and a method for using the same.

[0002]

2. Description of the Related Art Permanent wave treatment of hair with a permanent waving agent is carried out by using a reducing agent consisting of thioglycolic acid or its salts, cysteine or its hydrochloride, and an alkaline agent such as ammonia, monoethanolamine or triethanolamine. The first component for permanent wave, which is blended and optionally blended with a wetting agent, a surfactant, a stabilizer, etc., is applied to the hair, and the hair is wrapped around a rod or the like to form the hair in that state. The disulfide bond of cystine in keratin, which is a protein, is reductively cleaved with the above-mentioned reducing agent, and then the second position for the permanent wave, which is composed mainly of an oxidizing agent such as sodium bromate and hydrogen peroxide, is added to the new position. Is performed by reforming disulfide bonds and immobilizing waves. .

[0003]

As described above, in the wave treatment of the hair with the permanent waving agent, the reduction / oxidation reaction of the hair is carried out, and accordingly, the protein component is eluted from the hair, thereby, Physical properties of the hair, such as hair damage, loss of moisturizing properties, flexibility, smoothness of the hair surface, dryness of the hair, split ends, broken hair, loss of luster of the hair, etc. There was a problem that the feeling of touch and the feeling of touch deteriorated.

For this reason, oils such as lanolin and mink oil have been blended with permanent waving agents, but this also unavoidably elutes protein components from the hair, resulting in satisfactory results. I couldn't get it.

[0005]

[Means for Solving the Problems] The present inventors have conducted extensive studies to solve the problems at the time of the permanent wave treatment as described above, and as a result, the elution of protein components from the hair as described above has been confirmed. It was found that the hair damage caused by lysine is particularly due to a decrease in lysine in the constituent proteins of hair, and as a result of further studies to supplement lysine to the hair, lysine or its hydrochloride was treated as a permanent wave pretreatment agent. When the hair is pretreated with a permanent wave pretreatment agent containing lysine or its hydrochloride, and then permanent wave treatment is applied, the reduction of lysine in the hair due to the permanent wave treatment is suppressed. The present invention has been completed and found that the damage to hair can be reduced thereby, and the present invention has been completed.

That is, prior to the permanent wave treatment, the hair is pretreated with the permanent wave pretreatment agent of the present invention containing lysine or its hydrochloride.
Since lysine or its hydrochloride forms a thin film and covers the hair, the lysine or its hydrochloride present on the hair is affected by the permanent waving agent during the permanent waving treatment, and It is thought that the elution of lysine from the erythrocyte is suppressed, and thereby damage to hair is reduced.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION As lysine in the present invention,
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 this lysine or its hydrochloride in the permanent wave pretreatment agent 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,
In addition to the increase in the effect, the cost may increase.

The permanent wave pretreatment agent of the present invention uses water or water and alcohol as a main solvent, dissolves the lysine or its hydrochloride salt therein, and, if necessary, inhibits the effect of the lysine or its hydrochloride salt. It is prepared by adding other components to the extent that it does not exist. Examples of the additive component include various surfactants such as anionic surfactants, cationic surfactants, amphoteric surfactants, nonionic surfactants, carrageenan, xanthan gum, and various alkylolamide thickening agents. Agent,
Propylene glycol, 1,3-butylene glycol,
Wetting agents such as glycerin and diglycerin, 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 protein derived from animals and plants such as collagen, keratin, silk, soybean protein, wheat protein and their derivatives, and chelating agents. , PH adjusters, fragrances and the like.

The permanent wave treatment after pretreating the hair with the permanent wave pretreatment agent of the present invention can be carried out using the usual permanent wave first agent and permanent wave second agent. If the first agent for permanent wave contains lysine or a hydrochloride thereof, more preferable results can be obtained.

[0011]

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

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

[0013]

[Table 1]

Further, the following first and second agents were prepared as permanent wave agents for the permanent wave treatment of hair pretreated with the above-mentioned permanent wave pretreatment agent. The compounding amounts are all parts by weight.

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

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

In the treatment with the pretreatment agent for permanent wave and the agent for permanent wave,
As shown below, a hair bundle was prepared from untreated hair (human hair not treated with bleach) and bleached hair.

Preparation of hair tresses: (Untreated hair) Hair tresses weighing 0.5 g are made. Washing First, a 5.0 W / V% solution of polyoxyethylene (9) lauryl ether was prepared as a detergent, and the above hair bundle was dipped in 1 liter of this detergent and washed with stirring for 30 minutes.

The washed hair bundle is immersed in 2 liters of rinse-purified water,
Stir for minutes. At this time, the purified water is exchanged 3 times. Drying The hair bundle after rinsing is naturally dried.

(Bleach hair) First, a washed and rinsed hair bundle of the untreated hair is prepared. 3.0 W / V% of hydrogen peroxide and 4.0 W / V% of ammonia water (25%) were dissolved in purified water to obtain pH 10.2.
To prepare a bleaching agent. The above hair bundle is immersed in 500 ml of this bleaching agent, and it is kept at 30 ° C. for 30 minutes.
Let stand for a minute.

Next, the hair bundle is immersed in a 1N acetic acid aqueous solution at room temperature for 10 minutes. The above-mentioned acetic acid-treated hair bundle is immersed in 2 liters of purified water at room temperature, and washed by stirring for 30 minutes. At this time, the purified water is exchanged 3 times. The above-mentioned rinsed hair bundle is naturally dried.

After wetting the untreated and bleached hair bundles prepared as described above and trimming them to a length of 17 cm, the hair bundle was treated with a pretreatment agent for permanent wave as described below. Treatment and permanent wave treatment with the first agent for permanent wave and the second agent for permanent wave were performed.

Permanent Wave Pretreatment 0.5 g of the permanent wave pretreatment agent of Example 1 and 0.5 g of the permanent wave pretreatment agent of Comparative Example 1 were separately applied to each of the above two types of hair bundles, and the hair tress was kept at room temperature for 5 minutes. Allow to complete permanent wave pretreatment.

Permanent Wave Treatment The hair bundle after the above pretreatment is wrapped around a rod (diameter 10 mm), 1 g of the first agent for permanent wave is applied to the hair bundle, and the hair bundle is left at room temperature for 15 minutes, then washed with water, and then the permanent hair. After applying 0.5 g of the second agent for wave and leaving it for 10 minutes, the second agent for permanent wave was added again to 0.
After applying 5 g and leaving it for 5 minutes, it was washed with water and naturally dried 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. The results of amino acid analysis of untreated hair are shown in Table 2 and the results of amino acid analysis of bleached hair are shown in Table 3. In each case, the results are shown for hairs that have not been subjected to permanent wave pretreatment or permanent wave treatment. Results of amino acid analysis are shown as blanks. In addition, when displaying the results of each amino acid analysis, the conversion values are shown 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 pretreatment agent of Example 1, those of Comparative Example 1 were obtained. Compared to the case of pretreatment with a permanent wave pretreatment agent, the reduction of lysine was less, and the softness of the hair after the permanent wave treatment was evaluated by 10 panelists. When the pretreatment with the wave pretreatment agent was performed, the hair was evaluated to be softer than in the case of the pretreatment with the permanent wave pretreatment agent of Comparative Example 1.

Next, Table 4 shows the results of the examination of the wave efficiency and the wave retention rate by the above permanent wave treatment. The method for obtaining the wave efficiency and the wave retention rate is as follows.

One end of the hair bundle after the above permanent wave treatment is fixed to the panel and hung down, and the average wavelength L of the wave is set.
And the wave efficiency is calculated from the average wavelength L and the diameter (10 mm) of the rod by the following formula.

[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 of 40 ° C. and 80% relative humidity for 10 days. Then, the wave efficiency is examined in the same manner as above, and the wave retention rate is examined by the following formula from the wave efficiency after 10 days and the wave efficiency immediately after the permanent wave treatment.

[0033]

[0034]

[Table 4]

As shown in Table 4, there is no significant difference in wave efficiency and wave retention between Example 1 and Comparative Example 1, and the permanent pre-treatment with the lysine-containing permanent wave pre-treatment agent was performed. There was no adverse effect on the wave treatment.

[0036]

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

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Katsumi Kanayama 2-17-2 Akagawa, Asahi-ku, Osaka City, Ltd. Within Milbon (56) References JP-A-58-39612 (JP, A) (58) Survey Areas (Int.Cl. ⁷ , DB name) A61K 7/09 A61K 7/06

Claims (3)

(57) [Claims] 1. A permanent wave pretreatment agent comprising lysine or a hydrochloride thereof. Wherein lysine or permanent waving pretreatment agent according to claim 1 content of from 0.01 to 5% by weight lysine in terms of its hydrochloride salt. 3. A method for using a permanent wave pretreatment agent, which comprises using the permanent wave pretreatment agent according to claim 1 before using the first agent for permanent wave containing lysine or a hydrochloride thereof.