WO2020090604A1

WO2020090604A1 - Second agent for hair deformation treatment, hair deformation treatment method and hair deformation agent

Info

Publication number: WO2020090604A1
Application number: PCT/JP2019/041638
Authority: WO
Inventors: 小野　和美; 綱行石森; 大介渡辺
Original assignee: 株式会社資生堂
Priority date: 2018-10-31
Filing date: 2019-10-24
Publication date: 2020-05-07
Also published as: JP2020070253A

Abstract

The present invention relates to a second agent for hair deformation treatment for use after treating hair with a first agent containing a reducing agent, said second agent containing 4-8 mass% bromate or perborate and having a pH of 8.5-10. By means of the present invention, it is possible to provide a second agent for hair deformation treatment, a hair deformation treatment method and a hair deformation agent which enable stably forming solid, large, three-dimensional waves that do not droop.

Description

Second agent for hair deformation treatment, hair deformation treatment method and hair deformation agent

The present invention relates to a second agent for hair deformation treatment, a hair deformation treatment method, and a hair deformation agent.

The hair deformation treatment such as permanent wave treatment is performed by treating the hair with a reducing agent to cleave the disulfide bond in the hair, applying a wave with a rod or the like, and re-bonding the disulfide bond with an oxidizing agent.

Patent Document 1 describes a hair treatment agent used after reduction treatment of hair in hair deformation treatment, which is an alkaline liquid having a pH of 8 or more (claim 1), and bromine. A hair treatment composition according to claim 1 or the like (claim 5) containing an acid salt is described. According to this hair treatment agent, the oxidizing environment of the hair after the reduction treatment of the hair in the hair deforming treatment can be adjusted so that the oxidation can proceed sufficiently and uniformly, and the effect of the hair deforming treatment can be obtained to the level not conventionally obtained. Since it can be increased, excellent wave formation, straightening of hair, elasticity imparting, durability, no difference between wet and dry are ensured, and a good finished feeling, that is, low damage property, good finger passage, softness Now, it is described that a natural gloss is obtained (paragraph [0013]).

In Examples 16 to 26 of Patent Document 1, the second agent containing 8% by mass of bromate and having a pH of 8.1 to 10.7 is used. However, with the conventional methods such as these examples, it was not possible to stably form a dull, firm and large three-dimensional wave.

JP, 2013-245189, A

The present invention has been made in view of the above circumstances, and a problem to be solved by the present invention is that a dull, firm, large, and three-dimensional wave can be stably formed, and a hair deformation treatment first It is to provide two agents, a hair deformation treatment method, and a hair deformation agent.

As a result of intensive studies to solve the above problems, the present inventors have found that after treating hair with a first agent containing a reducing agent, it contains 4 to 8% by mass of bromate or perborate. By treating the hair with the second agent having a pH of 8.5 to 10 and surprisingly, it was found that a drooping, firm and large three-dimensional wave can be stably formed, and the present invention is achieved. completed. The present invention is based on such findings, and specifically, the present invention is as follows.

[1] Hair containing 4 to 8% by mass of bromate or perborate and having a pH of 8.5 to 10 for use after treating the hair with a first agent containing a reducing agent Second agent for deformation treatment.
[2] (Step 1) a step of treating hair with a first agent containing a reducing agent; and (Step 2) 4 to 8% by mass of bromate or perboron with respect to the hair treated in Step 1. A method for treating hair deformation, comprising a step of treating hair with a second agent containing an acid salt and having a pH of 8.5 to 10.
[3] The hair deformation treatment method according to [2], in which a firm three-dimensional curl is applied to the hair.
[4] A hair deforming agent comprising a first agent containing a reducing agent and a second agent containing 4 to 8 mass% of bromate or perborate and having a pH of 8.5 to 10.

According to the second agent for hair deformation treatment, the hair deformation treatment method, and the hair deformation agent of the present invention, it is possible to form a firm, large and three-dimensional wave. The second agent for hair deformation treatment, the hair deformation treatment method, and the wave formed by the hair deformation agent of the present invention are retained for a long period of time.

It is a photograph which shows the experimental result of examination of pH of the 2nd agent of Test example 1. FIG. 3 is a schematic diagram showing lengths a1 to a3 used for measuring the minor axis of treated hair.

<Second agent for hair deformation treatment>
The second agent for treating hair deformation of the present invention contains 4 to 8% by mass of bromate or perborate for use after treating the hair with the first agent containing a reducing agent, and has a pH of Is a second agent for hair deformation treatment having a viscosity of 8.5 to 10. Usually, the hair to be treated is wrapped around a cylindrical rod or coil having a specific radius, and then a reduction treatment is carried out with a first agent and an oxidation treatment is carried out with a second agent to remove the hair from the rod or coil. , Hair deformation processing is performed. Alternatively, by subjecting the hair to be treated to reduction treatment with the first agent, wrapping the hair around a cylindrical rod or coil having a specific radius, and subjecting the hair to oxidation treatment with the second agent to remove the hair from the rod or coil. The hair deformation treatment may be performed.

As the “reducing agent”, any of those usually used for the first agent for hair deformation treatment can be used. As the reducing agent, one or more selected from cysteamine or a salt thereof, thioglycolic acid or a salt thereof, thiolactic acid or a salt thereof, cysteine or a salt thereof, N-acetylcysteine, sulfite and 2-mercapto-4-butanolide. Reducing agent of. Here, cysteine and N-acetyl cysteine include those having the structures of L-cysteine, D-cysteine and DL-cysteine. Preferred are one or more reducing agents selected from thioglycolic acid or a salt thereof, thiolactic acid or a salt thereof, cysteine or a salt thereof and N-acetylcysteine, and more preferably thioglycolate and thiolactic acid. There may be mentioned one or more reducing agents selected from salts. One or more reducing agents selected from thioglycollate and thiolactate are preferred because they have little effect on the skin. A reducing agent having a basic group, an acidic group, or the like is preferable because it can form a dull, firm and large three-dimensional wave. Examples of the salt of the reducing agent include inorganic acid salts such as hydrochloride, sulfate and nitrate, organic acid salts such as methanesulfonate, benzenesulfonate and maleate, alkali salts such as sodium salt and potassium salt. Examples thereof include alkaline earth metal salts such as metal salts, magnesium salts and calcium salts, inorganic base salts such as ammonia salts, ethanolamine salts, isopropanolamine salts, triethylamine salts, arginine salts, lysine salts and the like. In addition to the above reducing agent, a dimer of the reducing agent, such as dithiodiglycolic acid or dithiodilactic acid, may be added to the first agent in an amount equal to or less than the reducing agent.

The content of the reducing agent in the first agent, the hair treatment method of the first agent, the pH, the treatment temperature, the treatment time, etc. can be carried out based on a usual method. That is, the content, the treatment method, the pH, the treatment temperature, and the treatment time can be arbitrarily selected according to the reducing agent to be used. The content of the reducing agent in the first agent is, for example, 1 to 15 mass% with respect to the first agent, preferably 2 to 10 mass%, more preferably 4 to 8 mass%. Examples of the pH of the first agent include pH 5 to 10, preferably pH 7 to 10, and more preferably pH 8 to 9.5.

After the reduction treatment with the first agent is finished, the reducing agent remaining on the hair will hinder the subsequent oxidation reaction, so it is preferable to wash it off with water.

Specific examples of the bromate or perborate contained in the second agent include sodium bromate, potassium bromate, sodium perborate, potassium perborate and the like. The content of bromate or perborate in the second agent is, for example, 4 to 8% by mass, preferably 4 to 7% by mass, more preferably 4 to 6% by mass. Be done. As described in Test Example 2 described below, by setting the content to 4 to 8% by mass, it is possible to stably form a large, firm and three-dimensional wave that is dull and has a suitable feel of hair. Obtainable. Furthermore, by setting the content to 4 to 6% by mass, it is possible to stably form a firm and large three-dimensional wave which is dull, and it is possible to obtain a smooth hair feel, which is more preferable. ..

The pH of the second agent is, for example, 8.5 to 10, and preferably 8.5 to 9. When the content of bromate or perborate and the pH of the second agent are within the above range, a larger amount of mixed disulfide can be left in the hair, and thereby, dull and firm Large, three-dimensional waves can be formed.

The hair treatment method, treatment temperature, treatment time, etc. of the second agent can be carried out based on ordinary methods.

A pH adjuster is used to adjust the pH of the first and second agents. Examples of the pH adjusting agent include those usually used for hair deformation treatment, and examples thereof include phosphoric acid, hydrochloric acid, sulfuric acid, methanesulfonic acid, citric acid, acetic acid, sodium dihydrogen phosphate, trisodium phosphate, sodium acetate, Sodium hydroxide, sodium carbonate, sodium hydrogen carbonate, potassium hydroxide, potassium carbonate, potassium hydrogen carbonate, monoethanolamine, ammonia, ammonium carbonate, 2-amino-2-methyl-1-propanol, tripotassium citrate, phosphoric acid Examples thereof include diammonium hydrogen.

Other components can be added to the first agent and the second agent as long as the effects of the present invention are not impaired. Other components include, for example, higher alcohols, solvents, oils, wetting agents, cationic, anionic and amphoteric surfactants, urea, guanidine, guanidine salts, silicones, aluminum stearate, alum and other aluminum compounds, and quenching agents. Acids, succinic acid, acetic acid, lactic acid, tartaric acid, malic acid, glycine, aspartic acid and other organic acids, hydrochloric acid, phosphoric acid and other inorganic acids, ethylenediamine, mono-, di- or tri-ethanolamine, morpholine, basic amino acids Alkaline agents such as ammonia, sodium hydroxide, tetrasodium ethylenediaminetetraacetate, pentasodium diethylenetriaminepentaacetate, sodium polyphosphate, sequestering agents such as phytic acid, proteins, thickeners, emulsifiers, hair restorers, bactericides, colorants , And fragrances.

The first agent and the second agent are prepared by dissolving them in water or an aqueous solvent to prepare a solution, emulsion, suspension, aerosol or the like. Examples of the aqueous solvent include water containing an organic solvent such as ethanol and isopropanol at a concentration that does not affect the human body. The first agent and the second agent are used by applying or spraying on the hair.

By performing the hair deformation treatment using the second agent for hair deformation treatment of the present invention, it is possible to apply a firm and large three-dimensional curl that does not drip on the hair. As described in the test example described below, by performing the hair deformation treatment, the minor diameter of curl of hair and the thickness of hair are improved as compared with the conventional method.

<Hair deformation method>
The hair deformation treatment method of the present invention includes the following steps.
(Step 1) a step of treating hair with a first agent containing a reducing agent; and (Step 2) 4-8% by mass of bromate or perborate with respect to the hair treated in Step 1. A step of treating the hair with a second agent which contains and has a pH of 8.5-10.

The first agent in step 1, the content of the reducing agent in the first agent, the hair treatment method for the first agent, the pH, the treatment temperature, the treatment time and the like can be the same as described above. Since the reducing agent remaining on the hair after the step 1 will hinder the oxidation reaction of the subsequent step 2, it is preferable to wash it off with water. The second agent in step 2, the content of the oxidizing agent in the second agent, the hair treatment method of the second agent, the pH, the treatment temperature, the treatment time and the like can be the same as described above. Generally, the hair can be curled by winding the hair around a rod or coil before Step 1 or after Step 1 and removing the rod or coil after Step 2.

By the hair deformation treatment method of the present invention, it is possible to apply a firm and large three-dimensional curl that does not drip on the hair. As described in the test example described below, by performing the hair deformation treatment, the minor diameter of curl of hair and the thickness of hair are improved as compared with the conventional method. Here, the "dull, firm and large three-dimensional curl" refers to hair that has been combed twice with a comb after being dried after being subjected to a hair deformation treatment according to the method described in the test example below. The curl in which the minor axis of the curl is measured and compared with the radius of the rod used is a curl in which the minor axis of the curl is equal to or larger than the radius of the rod.

<Hair deformer>
The hair deforming agent of the present invention comprises a first agent containing a reducing agent and a second agent containing 4 to 8% by mass of bromate or perborate and having a pH of 8.5 to 10. .
The first agent and the second agent are the same as those described above. The hair deforming agent of the present invention contains these two agents as a set and can be used in the hair deforming treatment method of the present invention.

Hereinafter, the present invention will be described in more detail with reference to Examples and Comparative Examples, but the present invention is not limited to these.

The reagents used in the following Examples and Comparative Examples were as follows.
Ammonium thiolactate (Bruno Boc, 60%)
Sodium bromate (made by Sasaki Chemical Co., Ltd.)
Sodium hydroxide (manufactured by Tokyo Ohka Kogyo Co., Ltd.)
Ethanolamine (manufactured by BASF)

Test Example 1: Examination of pH of second agent 8.0 parts by mass of ammonium thiolactate (60%) (4.8 parts by mass as ammonium thiolactate) and 3.0 parts by mass of monoethanolamine were added to 89.0 parts by mass of purified water. The first part was prepared by mixing with parts. Further, by mixing 6.0 parts by mass of sodium bromate and 93.0 parts by mass of purified water and adding sodium hydroxide, a second agent having a pH of 6, 8, 8.5, 10, and 12 is prepared. did.

2 bundles of 25 cm hair 3 g hair bundle (product name: hair bundle black hair root alignment (BS-B3AK), manufactured by Vyrax) were used. The bundle of hair was wrapped around a cylindrical plastic rod with a diameter of 2.3 cm (radius 1.15 cm) so that it wraps around its flat surface. Successively, it is dipped in the first agent and left at 30 ° C. for 15 minutes, washed with water for 1 minute, dipped in 1, 5, 10, 15 and 20% by mass of an intermediate treatment agent for hair deformation treatment and kept at room temperature for 2 minutes. The rod was left for a minute, immersed in the second agent, left at room temperature for 15 minutes, washed with water, and the rod was removed. Let it air dry overnight and comb twice. In addition, the one not treated with the intermediate treatment agent for hair deformation treatment was used as a control (Comparative Example 1). The two tresses thus treated were placed on their desks as shown in FIG.

The short diameter and thickness of the obtained hair were measured as follows. As shown in FIG. 1, two bundles of treated hairs were placed on their desks with their flat surfaces being superposed on each other. Regarding the thickness of the hair, the thickness (cm) of the hair was measured when viewed from the sideways direction of the superposed state, that is, the sideways direction of the photograph of FIG.

The short diameter of the hair is selected as one hair bundle in which a plurality of hairs are gathered into one, and is in a state as shown in FIG. 2 when viewed from directly above the desk, that is, when viewed directly from the front of FIG. The lengths a1 to a3 of the three peaks from the end of were measured and the average value thereof was taken as the minor axis. Specifically, for the second mountain from the end of the hair bundle, draw a tangent line L1 that touches the hair at the contact points P1 and P2, and draw a straight line that has the longest length from the tangent line L1 to the second mountain. It was pulled out and its length a1 (cm) was measured. For the third mountain, draw a tangent line L2 that touches the hair at the contact points P3 and P4, and draw a straight line having the longest length from the tangent line L2 to the third mountain at a right angle, and then its length a2 (cm). Was measured. For the fourth mountain, draw a tangent line L3 that touches the hair at the contact points P5 and P6, and draw a straight line having the longest length from the tangent line L3 to the fourth mountain, and the length a3 (cm). Was measured. The average value of the obtained a1 to a3 was defined as the minor axis (cm). Table 1 shows the measurement results of the minor axis and the thickness.

The feel of the obtained hair was evaluated according to the following evaluation criteria.
A: Smooth B: Normal C: Rigid Table 1 shows the measurement results and feel of the minor axis and thickness.

From these results, in Examples 1 to 2 and Comparative Example 3 in which the pH of the second agent was 8.5 to 12, the minor axis was 1.61 to 2.03 cm and the radius of the rod was 1.15 cm or more. Both the short diameter and the thickness became large, and a firm, large, three-dimensional wave was stably formed. As described above, by setting the pH of the second agent to 8.5 or more, it was possible to stably form a slack, firm and large three-dimensional wave. However, in Comparative Example 3 in which the second agent having a pH of 12 was used, the feel was poor, and it was found that the pH of the second agent is preferably 8 to 10. By adjusting the pH of the second agent to 8.5 or more, the rate of oxidation treatment by the second agent is slowed down, and the three-dimensional structure of the curls of the hair is stabilized, resulting in a firm, large solid body. It is presumed that a stable wave can be formed stably.

Test Example 2: Examination of Content of Sodium Bromate The first agent prepared in Test Example 1 was used. In addition, sodium bromate 2.0, 4.0, 6.0, 8.0 and 10.0 parts by mass was mixed with purified water so that the total amount was 100 parts by mass, and the pH of the second agent was adjusted. A second agent was prepared by adding sodium hydroxide in order to adjust it to around 8. The pH of the second agent used was as shown in Table 2.

Hair treatment was performed in the same manner as in Test Example 1, and the minor axis, thickness and feel of the obtained hair were measured. The results are shown in Table 2.

From these results, in Examples 3 to 5 and Comparative Example 5 in which the content of sodium bromate was 4 to 8% by mass, the minor axis was 1.19 to 1.42 cm, and the rod radius was 1.15 cm or more. Yes, both the short diameter and the thickness became large, and a firm, large, three-dimensional wave was stably formed. However, in Comparative Example 5 in which the content of sodium bromate was 10% by mass, the feel was poor, so it was found that the content of sodium bromate is preferably 4 to 8% by mass. It was found that when the content of sodium bromate is 4 to 6% by mass (Examples 4 and 5), the minor axis is 1.32 to 1.42 cm, and a smooth feel is obtained, which is more preferable. It was also found that when the content of sodium bromate is 6% by mass (Example 5), the minor axis is 1.42 cm, which is more preferable. As described above, by setting the concentration of sodium bromate in the second agent to 4 to 8% by mass, it was possible to stably form a dull, firm and large three-dimensional wave.

The embodiments disclosed this time are to be considered as illustrative in all points and not restrictive. The scope of the present invention is shown not by the above description but by the scope of the claims, and is intended to include meanings equivalent to the scope of the claims and all modifications within the scope.

The present invention provides a second agent for hair deformation treatment, a hair deformation treatment method, and a hair deforming agent, which are capable of stably forming a firm, large, and three-dimensional wave that is dull.

Claims

For treatment of hair deformation containing 4 to 8% by mass of bromate or perborate and having a pH of 8.5 to 10, for use after treating hair with a first agent containing a reducing agent Second agent.
(Step 1) a step of treating hair with a first agent containing a reducing agent; and (Step 2) 4-8% by mass of bromate or perborate with respect to the hair treated in Step 1. A method for treating hair deformation, which comprises the step of treating hair with a second agent which is contained and has a pH of 8.5 to 10.
The method for processing hair deformation according to claim 2, wherein a firm three-dimensional curl is applied to the hair.
A hair deforming agent comprising a first agent containing a reducing agent and a second agent containing 4 to 8% by mass of bromate or perborate and having a pH of 8.5 to 10.