JP2002029943A - Perming liquid for correcting curly hair - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a perming liquid used for correcting the curly hair, the so-called straight perming. SOLUTION: This perming liquid for correcting the curly hair in a gel-like form is characterized in that a water-soluble polymer as a thickening spreader is contained and the amount of weight increase per g of the hair is >=14.0 mg when the hair is coated with the perming liquid for correcting the curly hair, allowed to stand for 15 min, washed with warm flowing water at 35-40 deg.C for 30 s, then freed from adhesive moisture, coated with a 5 wt.% aqueous solution of sodium bromate, allowed to stand for 15 min, washed with warm flowing water at 35-40 deg.C for 30 s and subsequently dried.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a perm solution for straightening hair, which is used for straightening hair.

[0002]

2. Description of the Related Art In the treatment of so-called straight perm for straightening hair, a creamy perm solution using a higher alcohol or a surfactant has conventionally been used as a thickening and spreading agent. The thickening and spreading agent is intended to give the perm solution an appropriate viscosity and spreadability, but it is necessary to straighten the iron while holding the hair straight at the time of hair straightening treatment, In order to enhance the binding between hairs, the creamy perm solution had a high viscosity. Therefore, even when using a comb or the like to apply the composition evenly to the hair when applying the composition to the hair, the combability is poor, and the composition becomes uneven and the binding property between the hairs is partially reduced. And the workability during the treatment was inferior.

[0003] In addition, the texture of the conventional perm solution after treatment is reduced, and a smooth texture cannot be obtained.

[0004]

DISCLOSURE OF THE INVENTION The present invention relates to a curly hair which has a low viscosity and can be uniformly applied to the hair when applied to the hair so that the whole hair can be held straight and the texture after the treatment is improved. The purpose is to provide a perm solution for correction.

[0005]

Means for Solving the Problems The present inventors have proposed that a conventional perm solution has a low affinity for hair and has a lower viscosity than that of a conventional perm solution. It was found that it was important to increase the affinity for hair, and if the affinity for hair was further increased and the permeability to the deep part of the hair was also improved, it was found that the texture after the treatment was improved. Reached.

That is, the present invention provides a gel-like hair straightening liquid containing a water-soluble polymer as a thickening and spreading agent, which is applied to the hair for 15 minutes. The hair was washed with warm running water at 35 to 40 ° C. for 30 seconds to remove the adhering water. Further, the hair was coated with a 5% by weight aqueous solution of sodium bromate and allowed to stand for 15 minutes.
When the hair is washed with warm running water of の 40 ° C. for 30 seconds and then dried, the weight gain per gram of the hair is 1
It is a perm solution for straightening hair which is 4.0 mg or more.

[0007] By containing a water-soluble polymer as a thickening and spreading agent, the perm solution for straightening hair becomes gel-like, has good affinity with hair, and has a strong binding force between hairs.
It has a low viscosity and can be uniformly applied to the hair when applied to the hair, so that the entire hair can be held straight and the workability during the treatment can be improved. In addition, the permeability to the deep part of the hair is improved, and the water-soluble polymer in the perm solution for hair straightening remains on the surface and / or surface layer of the hair even after the operation, that is, after the washing, so that a thin layer is formed. This improves the bending strength of the hair, thereby reducing the number of points of contact between the hairs, making it difficult for the hairs to become entangled, and providing a smooth texture.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION In the present invention, the type of water-soluble polymer used as a thickening and spreading agent is such that a perm solution for straightening hair can be made into a gel, and a perm solution for straightening hair described below. The carboxymethyl cellulose and / or its salt (CM
C) or cationized hydroxyethyl cellulose (QH)
EC) and the like, and carboxymethylcellulose and / or a salt thereof are preferably used. By using carboxymethylcellulose and / or its salt, which have excellent affinity with hair, the binding power between hairs is increased while having a low viscosity, so that it is easy to apply uniformly to hair and further penetrates deep into hair. Also excellent. The water-soluble polymer used as a thickening agent may be used alone or in a mixture of two or more. For example, in addition to the carboxymethylcellulose and / or a salt thereof, other water-soluble polymers may be used. It may contain a water-soluble polymer.

The salt of carboxymethylcellulose is not particularly limited, and includes, for example, alkali metal salts such as sodium salt and potassium salt, ammonium salt and the like, and a mixture of these salts may be used.

The perming solution for straightening hair of the present invention is prepared by applying the perming solution for straightening hair to hair, leaving it for 15 minutes,
After washing the hair with hot running water of 0 ° C. for 30 seconds, the attached water was removed, a 5% by weight aqueous solution of sodium bromate was applied to the hair, and the hair was left for 15 minutes. When the hair is washed for 30 seconds and then dried, the weight gain per gram of the hair must be 14.0 mg or more. The amount of weight increase per gram of hair is 1
When the amount is less than 4.0 mg, 1 g of the water-soluble polymer hair
As a result, the amount of the hair per contact decreases, the binding force between the hairs decreases, and the entire hair cannot be held straight during the treatment.

In addition, the perm solution for straightening hair of the present invention is preferably applied to the hair by applying the perming solution for straightening hair to hair for 15 minutes, and the hair is washed with warm running water at 35 to 40 ° C. for 30 seconds. After that, attached water was removed, and a 5% by weight aqueous solution of sodium bromate was applied to the hair and left for 15 minutes.
The hair has a bending strength of 0.90 when the hair is washed with warm running water at 35 to 40 ° C. for 30 seconds and then dried.
It is preferably g · cm ² / cm or more. If the bending strength of the hair is less than 0.90 g · cm ² / cm, the number of contact points between the hairs increases, and the hairs become entangled with each other, making it difficult to obtain a smooth texture.

The amount of weight increase per gram of hair as described above, that is, the amount of water-soluble polymer adsorbed per gram of hair,
Furthermore, the method for obtaining the bending strength of the hair is not particularly limited,
By controlling the type of water-soluble polymer to be blended into the perm solution for straightening hair, and further controlling the composition of the water-soluble polymer,
Achieved.

The amount of the water-soluble polymer in the perming solution for straightening hair of the present invention is such that the perming solution for straightening hair can be formed into a gel, and the physical properties of the perming solution for straightening hair described above can be determined. There is no particular limitation as long as they can go out.

The types and proportions of components other than the water-soluble polymer in the perm solution for straightening hair of the present invention are not particularly limited as long as the action of the present invention is not impaired. Can be the same as

Commonly used perm solutions include an alkaline solution containing a reducing agent (eg, thioglycolic acid, a salt thereof, cysteine, etc.), which is applied to hair first during treatment, ie, a first solution, and a first solution. An oxidizing agent (for example, potassium bromate, sodium bromate, sodium perborate,
There is a solution containing a hydrogen peroxide solution), that is, a second solution. The perm solution for straightening hair of the present invention may be either of these as long as it has the above-described configuration.

The perming solution for straightening hair of the present invention can be used in the treatment of hair straightening in the same manner as the use of a general perming solution for straightening hair, but the perming solution for straightening hair of the present invention can be used. By doing so, it becomes easier to apply evenly to the hair,
In addition, the entire hair can be held straight, and workability at the time of treatment is improved.

Hereinafter, the present invention will be described in more detail with reference to Test Examples and Examples. Test Example Test Method Measurement of Adsorption Amount of Water-Soluble Polymer per 1 g of Hair (For Comparative Example 4, Adsorption Amount of Surfactant and Higher Alcohol) Permanent Hair Straightening of Examples 1 and Comparative Examples 1-4 Apply the solution to the following hair, leave for 15 minutes,
After washing the hair with hot running water of 0 ° C. for 30 seconds, the attached water is removed with a towel, and a 5% by weight aqueous solution of sodium bromate is applied to the hair and left for 15 minutes.
After washing the hair for 30 seconds with warm running water of 40 ° C., the hair was naturally dried to prepare a test sample. After leaving the test sample in a desiccator for one week to obtain a constant weight state, the weight (weight after adsorption) was measured using a precision precision balance, and the weight increase per 1 g of hair (adsorption Amount) was calculated. [Pretreatment of Hair] A bundle of 1 to 2 g of human hair having a length of about 15 cm was left in a desiccator for one week to obtain a constant weight, and then the weight (initial weight) was measured using a precision precision balance. Adsorption amount (mg / g of hair) = [weight after adsorption−initial weight] / initial weight Formula 1

Measurement of Flexural Strength of Hair 200 hairs treated in the same manner as in the above test (1) were subjected to two tests.
cm side by side and fixed with adhesive tape, hair bending feeling tester (Kato Tech Co., Ltd., KFS
-FB2-S), the bending strength of the hair was measured under the following measurement conditions. [Measurement conditions] SENS: Full scale 20 g Bending curvature: 1.0 Sample size: 2 cm Temperature: 21.0 to 23.0 ° C Humidity: 58 to 61% RH

Evaluation of Workability and Feeling Using the perm solutions for straightening hair of Examples 1 and 2 and Comparative Examples 4 and 5, sensory evaluation of workability and texture was performed. In Examples, Example 1 is the first liquid, Example 2 is the second liquid,
In the comparative example, Comparative Example 4 is the first liquid, and Comparative Example 5 is the second liquid. [Treatment method] The hair of the monitor is washed with a shampoo and divided into right and left. The first liquid is applied 30 g each on the left and right sides and heated for 15 minutes to soften the hair. After allowing to cool, comb through, leave for 15 minutes and rinse hair thoroughly with warm water. The second liquid is applied 30 g each on the left and right. Comb through, leave for 15 minutes and rinse hair thoroughly with warm water. In addition, each condition at the time of a treatment is performed similarly to the time of a usual general treatment.

Test Results The above test results are shown in Tables 1 to 3. In addition, the sensory evaluation of the test (3) was a comparison of the example with the comparative example. Table 1,
According to 2, in the case of the gel-like hair straightening solution, the weight increase (adsorption amount) of the water-soluble polymer per 1 g of hair was 14.
It can be seen that Comparative Examples 1 to 3 in which the amount is less than 0 mg are inferior in the bending strength of the hair. Therefore, although the perm solution for hair straightening of Comparative Examples 1 to 3 improves the workability at the time of treatment as compared with the creamy perm solution, the effect of improving the texture after the treatment is not obtained. Also, from Tables 1 and 2, Comparative Example 4, which is a creamy hair straightening solution, has a relatively large amount of adsorbed surfactant and higher alcohol after the treatment. Poor workability and texture after treatment.

[0021]

[Components used in Examples and Comparative Examples] CMC (No. 1): Ernest Gum FDM, manufactured by Daicel Chemical Industries, Ltd. CMC (No. 2): CMC 1260, Daicel Chemical Industries, Ltd. Q-HEC: Gelner QH-300, Daicel Chemical Industries, Ltd. Carboxyvinyl polymer: Carbopol 934 Sodium polyacrylate: Aron A-20P Sodium lauryl sulfate Cetostearyl alcohol Hydroxydiphosphonic acid liquid (70% by weight) Thio Ammonium glycolate (50% by weight) Monoethanolamine (99% by weight) Thermosetting PPT: Promois W-52 SIG,
Seiwa Chemical Co., Ltd. Sodium bromate disodium hydrogen phosphate Sodium dihydrogen phosphate Natural polymer humectant: Proticute CK, manufactured by Sasaki Chemical Co., Ltd.

Example 1, Comparative Examples 1 to 4 (First Liquid) The components shown in Table 4 were mixed in the proportions shown in Table 4 to prepare a perm solution for straightening hair.

Example 2, Comparative Example 5 (Second Liquid) The components and the mixing ratios shown in Table 5 were mixed to prepare a perm solution for straightening hair.

[0024]

[Table 1]

[0025]

[Table 2]

[0026]

[Table 3]

[0027]

[Table 4]

[0028]

[Table 5]

[0029]

The perm solution for straightening hair of the present invention can be uniformly applied to the hair when applied to the hair even with a low viscosity, can keep the whole hair straight, and is excellent in workability at the time of treatment. . In addition, since it penetrates deep into the hair, the texture after the treatment is improved, and a smooth feeling can be obtained.

Claims (3)

[Claims] 1. A gel-like hair straightening liquid containing a water-soluble polymer as a thickening and spreading agent, which is applied to the hair and left for 15 minutes. ~ 4
After washing the hair with hot running water of 0 ° C. for 30 seconds, the attached water was removed, a 5% by weight aqueous solution of sodium bromate was applied to the hair, and the hair was left for 15 minutes. A perm solution for straightening hair, wherein the weight gain per gram of the hair is 14.0 mg or more when the hair is washed for 30 seconds and dried. 2. A hair perm solution for hair straightening is applied to the hair.
Leave it for 5 minutes and warm the hair for 30 minutes with warm running water of 35-40 ° C.
After washing for 2 seconds, the adhering water is removed, and 5
The hair has a flexural strength of 0.9 when coated with a weight% aqueous solution of sodium bromate, left for 15 minutes, washed with warm flowing water at 35 to 40 ° C. for 30 seconds, and dried.
^{2. The} perm solution for straightening hair according to claim 1, wherein the perm solution is 0 g · cm ² / cm or more. 3. The perm solution for straightening hair according to claim 1, which contains at least carboxymethylcellulose and / or a salt thereof as a thickening and spreading agent.