JPS62132813A - Agent for hair treatment and method therefor - Google Patents

Abstract

PURPOSE:The titled agent simultaneously carrying out permanent wave formation treatment or reform for curly hair such as vicious hair, frizzed hair, etc., and hair dyeing treatment, obtained by blending a permanent wave solution with a metallic dyeing agent. CONSTITUTION:An agent for hair treatment comprising a first agent containing a thioglycolate (e.g., ammonium thioglycolate, etc.,) as a reducing agent, a mercapto compound such as cysteine, etc., and a compound containing a phenolic hydroxyl group or an enol form hydroxyl group or a hydroxyl group or carboxyl group similar to it as a metal sequestering agent for iron, copper, etc., or its derivative (e.g., gallic acid, salicylic acid, etc.,), a second agent containing a slat of metal such as iron, copper, etc., a third agent containing a phenolic hydroxyl group, etc., as a coupler and a fourth agent containing an oxidizing agent such as a bromate, perborate, aqueous solution of hydrogen peroxide, etc.

Description

Detailed Description of the Invention: ``Industrial Field of Application J'' The present invention relates to the formation of permanent waves on hair, or the hair transplantation correction such as curly hair, S hair, etc. The purpose of this treatment is to simultaneously perform a hair-forming treatment (forming treatment) and a hair dyeing treatment in parallel. The present invention relates to a hair treatment method.

``Prior Art'' Along with clothing, accessories, makeup, etc., hair treatments such as permanent waves and hair dyeing are important elements of modern fashion. 2. Description of the Related Art Conventionally, forming permanent waves and dyeing hair has been widely practiced as hair care. Also,
As the number of people aiming for unique fashion has increased, the number of people who have both permanent waves and hair dye treatments has increased, and it can be said that interest in hair care is extremely high.

First, a process for forming permanent waves and the like will be explained. Conventional permanent wave liquids typically consist of a combination of a first liquid and a second liquid. The first liquid contains a reducing agent such as a thioglycolate or cysteine, and the second liquid contains an oxidizing agent such as a bromate salt, a perborate salt, or a hydrogen peroxide solution.

There are two types of methods for forming permanent waves. One is the heated wave method, which requires heating, and the other is the cold wave method, which is performed at room temperature. The procedure for forming permanent waves etc. by the cold wave method is roughly as follows.

First, the hair is shaped into a desired shape by winding it into a rond, and then the first liquid is applied to the rond hair and left for a required period of time. Alternatively, the hair may be wrapped in a single knot while applying the first liquid. The reducing agent in the first liquid cleaves the cystine bonds in the keratin side chains and removes the restoring power from the hair. The hair thus made plastic is washed with water, rinsed, etc., and then the second liquid is applied. The oxidizing agent contained in the second liquid has the effect of recombining broken cystine bonds. Therefore, the hair is fixed in a new state in which waves and the like are formed. Once the desired permanent waves have been formed in this manner, the rod is removed from the hair, and the hair is washed, rinsed, dried, etc.

The heating wave method is the same as the above-mentioned cold wave method, after applying the first liquid to the hair wrapped in a ronde,
This method involves heating the material to a temperature not exceeding 0°C to accelerate the chemical reaction. The heated wave method requires less main ingredients such as reducing agents and oxidizing agents than the cold method.
A heating device is required for heating.

On the other hand, hair dyeing methods can be broadly classified into temporary hair dyeing methods and permanent hair dyeing methods that do not fade even with shampoo.

Temporary hair dyeing methods include color spray, color crayon,
This is a method in which the surface of the hair is temporarily coated with a hair dye, such as color rinse, containing a pigment as a base. Therefore, there was a drawback that the color easily faded with shampoo and the hair dyeing effect was lost.

Therefore, in order to obtain a durable hair dyeing effect, permanent hair dyeing methods using vegetable hair dyes, oxidative hair dyes, metal hair dyes, etc. are resorted to.

Among the permanent hair dyes mentioned above, typical vegetable hair dyes are those made by adding citric acid, etc. to a solution made by boiling down henna leaves or kneading dry powder with boiling water to make an acidic solution. .

Apply this to the hair, puncture it with a steamed towel, etc., and dye the hair. However, since vegetable hair dyeing has a red tone,
The treatment target is limited to a few people. That is, it is difficult to satisfy various tastes regarding fashionable hair, and it is not practical.

Currently, oxidative hair dyeing methods and metallic hair dyeing methods are widely used as permanent hair dyeing methods that can provide a wide variety of color tones. The oxidative hair dye consists of a first liquid containing an aromatic amino compound such as para-phenylene diamine or para-toluenediamine as a main ingredient, and a second liquid containing an oxidizing agent such as hydrogen peroxide as a main ingredient. To the first liquid, amines, polyphenols, etc. are added as a correcting agent to change the color tone, and ammonia etc. are also added to adjust the alkalinity. When the first liquid is applied to the hair and then the second liquid is applied, the oxidizing agent such as hydrogen peroxide in the second liquid is rapidly decomposed by the alkali of the first liquid and generates oxygen. 1st/
The aromatic amine compound and the modifying agent in & are oxidized by this oxygen and penetrate into the hair while forming an oxidized dye. On the other hand, melanin pigment in hair is oxidized and decomposed by oxygen during the nascent period. In this way, the dyeing reaction of keratin due to the production of oxidative dye and the decoloring reaction due to oxidative decomposition of melanin pigment occur in parallel, thereby making it possible to dye hair in various tones.

On the other hand, metallic hair dye is a two-part type (or a hair pre-treatment agent) consisting of a total salt solution containing a metal compound such as iron or copper as a main ingredient, and a coloring agent that exhibits a coloring reaction with the metal. It is a three-component drug containing the following: When the metal salt solution is applied to the hair,
Metal molecules such as iron combine with keratin and are fixed on the surface of the hair.Next, when the coloring agent is applied, a coloring reaction occurs with the fixed metal, dyeing the hair to a predetermined tone.

r=The problem that @ag is trying to solve: When hair salons, barbers, etc. perform both permanent waving and other permanent hair dyeing treatments on hair, each treatment is performed separately in sequence. That is, a common method is to form permanent waves or the like on the hair and then dye the hair, or to form permanent waves or the like after dyeing the hair. Therefore, no matter which order the treatments are performed, a considerable amount of time and effort is required, which is very uneconomical.

Oxidative hair dyeing, which is widely used as a permanent hair dyeing method, has the advantage of providing a wide range of colors and less fading due to shampooing, but has the drawback of having a high incidence of allergic dermatitis. Aromatic amino compounds such as para-phenylene diamine and para-toluene diamine, which are the main ingredients, are known to be the most sensitizing allergens among compounds used in cosmetics, and therefore, repeated use of oxidative hair dyes. Allergic dermatitis occurs at a high rate with use. Many cases of this condition have been observed not only in those undergoing hair dye treatment, but also in the hairdressers who performed the treatment. Furthermore, it has been revealed that people who have experienced allergic reactions experience cross-reactions with aromatic amino compounds that have a similar structure to para-phenylene diamine and para-toluenediamine contained in sulfa drugs, anesthetics, and the like. In addition, since the first liquid is strongly alkaline, it has primary irritation to the skin.

Since the hair dyeing reaction is mainly an oxidation reaction that proceeds under strong alkaline conditions, hair damage is significant. Cystine bonds are broken, making it difficult to create permanent waves. Furthermore, there were many problems such as fading due to ultraviolet irradiation, acidic shampoo, and acidic rinse.

Metallic hair dyeing has a strong bond between the metal and keratin, so the hair dyeing effect is robust, and it does not cause any allergic reactions like oxidative hair dyes because it does not cause primary irritation or sensitization to the human body. Although this does not occur, the metal molecules in the metal hair dye tend to react with reducing agents such as thioglycolate or cysteine in the permanent waving solution, reducing the reducing power and reducing the strength of the permanent waving. There was a problem in that it weakened the hair and at the same time made the hair dyeing efficiency worse.

The present inventor has devised a method for solving the problem with the aim of performing a safe and highly permanent permanent wave formation process and hair dyeing process at the same time. Layered. As a result, we have invented a hair treatment chemical and a hair treatment method using the same, which will be described below.

The hair treatment agent according to the present invention is: (1) Contains mercapto compounds such as thioglycolates and cysteine as a reducing agent, and contains a phenolic hydroxyl group, an enol-type hydroxyl group, or similar as a metal sequestering agent such as iron or copper. The first agent contains a compound having a hydroxyl group or a carboxyl group, or a derivative thereof, etc. The second agent contains a metal salt such as iron or copper ■ It develops color by reacting with the iron or copper contained in the second agent A third agent containing a phenolic hydroxyl group, an enol-type hydroxyl group, a compound having a similar hydroxyl group or a carboxyl group, or a derivative thereof as a coloring agent ■ An oxidizing agent such as bromate salts, perborate salts, hydrogen peroxide solution, etc. It consists of the first to fourth agents of the fourth agent containing.

In the first agent, the thioglycolic acid salts include thioglycolic acid and ammonium thioglycolic acid.

In addition, compounds having a phenolic hydroxyl group, an enol-type hydroxyl group, or similar hydroxyl groups or carboxyl groups, or derivatives thereof, etc. in the first and third agents are , gallic acid esters such as gallic acid and propyl gallate, salicylic acid, salicylate salts such as sodium salicylate and potassium salicylate, salicylic acid esters such as methyl salicylate and phenyl salicylate, tannic acid and its esters, resorcinol, pyrogallol, catechol, Hydroquinone, phenol, pyridoxine hydrochloride, hexachlorophene, hinokitiol, orthophenylphenol, cresol, chlorcresol, chlorxylenol, eugenol, isoeugenol, vanillin, parachlorophenol, paraphenolsulfonic acid subsalt, 2-(2-hydroxy-5 - Methylphenyl) benzotriazole, acetoacetic acid esters such as ethyl acetoacetate, ascorbic acid, gluconic acid and its salts, benzoic acid and its salts, and derivatives thereof, etc. In the second agent, iron or copper, etc. Metal salts refer to iron compounds such as ferrous sulfate, ferric chloride, iron tetroxide, iron sesquioxide, yellow iron oxide, and copper compounds such as steel acetate, copper 8 glycine copper sulfate, etc. Bromate salts of the fourth agent.

Perborate refers to bromate salts such as potassium bromate and sodium bromate, and perborate salts such as sodium bromate.

Next, a method of simultaneously performing a hair dyeing process and forming a desired shape such as a permanent wave on hair using the first to fourth agents will be described. First, while applying or after applying the first agent, the hair is shaped into a desired shape by winding it into a ronde, etc., and the hair is left in the desired shape while maintaining the shaped state, and then washed with water so that it remains on the hair surface. Next, a second agent containing a metal salt such as iron or copper is applied to the hair, left for a required period of time, and washed with water again to remove the remaining agent on the hair surface. Removing the second agent 0 Next, after applying a third agent that exhibits a color reaction with iron or copper contained in the second agent to the hair, a fourth agent containing an oxidizing agent is subsequently applied. After leaving it for the required time,
By removing the hair from its shape-holding state and subjecting it to appropriate treatments such as washing and drying, it is possible to obtain hair that has been subjected to a desired shape forming process and hair dyeing process.

Note that instead of washing with water after applying the first agent and washing with water after applying the second agent, a method such as absorbing or wiping off the excess agent remaining on the hair surface with a sponge or the like may be used.

The hair treatment method of the present invention includes not only sequentially applying the first to fourth agents to the hair, but also mixing the second agent and the third agent, applying the mixture to the hair, leaving it for a required period of time, and then washing with water. It is also possible to remove the second and third agents remaining on the hair surface by, for example, applying the fourth agent. It can also be applied to the hair.

Effect: The reducing agent in the first agent cleaves cystine bonds, making the hair plastic while keeping it in the desired shape.
Next, by applying the second agent, metal molecules such as iron or copper will bond firmly with the keratin of the hair. Next, by applying the third agent, the phenolic hydroxyl groups contained in the third agent, A coloring reaction occurs between a compound having an enol-type hydroxyl group or a similar hydroxyl group or a carboxyl group, or a derivative thereof (hereinafter referred to as "compounds having a hydroxyl group or a carboxyl group") and the metal molecule, Dye the hair to a predetermined tone. Subsequently applied fourth
The agent has the effect of recombining the cystine bonds broken by the first agent. Therefore, the hair is fixed in the new cystine bond state while maintaining its previously shaped shape.

By the way, as mentioned above, when metal molecules such as iron or copper are present in hair, the cystine-cleaving action of the reducing agent is inhibited, and the ability to form permanent waves is weakened. However, compounds having a hydroxyl group or a carboxyl group have the action of a sequestering agent that prevents metals such as iron or copper from reacting with reducing agents. That is, by incorporating the above-mentioned compounds into the first agent, the cystine-cleaving action of the reducing agent is not inhibited even on hair that has been previously dyed with a metallic hair dye. Compounds having a hydroxyl group or a carboxyl group also have reducing power, so they assist in the action of cleaving cystine bonds. Furthermore, since the reducing agent in the first agent has the effect of swelling the hair, it has the effect of promoting the bonding between the metal molecules in the second agent applied next and the keratin of the hair.

Embodiment A specific embodiment in which a permanent wave forming process and a hair dyeing process are performed simultaneously in accordance with the present invention will be described below.

First, apply the first agent to the hair wrapped around the rod, or apply the first agent to the hair wrapped around the rod.
While applying the agent to your hair, wrap it around a rod and leave it for 10 to 20 minutes. After that, wash with water to remove the first agent remaining on the surface of the hair and scalp. Next, apply the second agent evenly to the hair wrapped around the rod and leave it for 10 minutes. Penetrates the metal into the hair. Thereafter, the second agent remaining on the hair surface is removed by washing with water again. Subsequently, the third
The agent and the fourth agent may be applied to the hair sequentially, or the third agent and the fourth agent may be mixed and applied immediately before use to save processing time. After leaving it for 10-15 minutes, remove the rod, wash with water, dry, etc. In this way, it takes about 1 hour, including the time to wrap the rod (about 20 minutes), to form permanent waves and dye the hair. is completed. However, the above-mentioned treatment time can be changed as appropriate depending on the condition of the hair of the person to be treated, the desired shape and degree of permanent waves, the degree of hair dyeing, and the like.

The test results of the degree of waving of the hair obtained by the present invention, wave retention of one tone, fading resistance, second permanent wave forming ability on hair that has been previously subjected to metallic hair dyeing treatment, etc. are shown in Tables 1 and 2 below. Shown in 3. For test hair,
A bundle of 50 gray hairs or bleached hairs with a length of 20 cm was used, which was shampooed, washed with water, and dried. As shown in FIG. 1, the wave forming tool used to form permanent waves is a plate-shaped material with seven pins A through G planted in two parallel rows at predetermined intervals.

The diameter of the pins is 3 am, and the spacing between each pin is AB.

22.5wm between QC,..., EF, AC, C
E each space and BD, Kano.

20 between each FG. It's OM. The test method was to fix one end (root side) of the hair bundle, which had been washed with water and drained, to the pin A of the wave forming tool as shown in Figure 2, and to
and G in a staggered manner, then attach pin A to the upper side 1.
The wave forming tool is stood vertically so that the pin G is on the lower side, and a weight is suspended from the lower end of the hair bundle to apply a load of 100 g.

After the hair bundle is fixed to the pin G in a stretched state, the load is removed, the wave forming tool is held horizontally, and the hair is processed.

To treat the hair, apply the first agent evenly to the hair bundle using a dropper, leave it for 10 minutes, and wash with water for 30 seconds.

Next, the second agent was applied in the same manner as the first agent, left for 10 minutes, and washed with water for 30 seconds. Next, add 2 doses of the 3rd and 4th agents.
: Apply a mixture of 1:1 in the same manner as the first punishment, and apply 1:1.
After leaving it for 5 minutes, remove the hair bundle from the wave forming tool and
Rinse with water for 0 seconds and dry on a cotton cloth.

The degree of wave in each table was determined using the following formula.

However, X: Length of hair fixed between pins CDE Y: Pin CE
Distance Z: Distance between the points where the hair bundle was in contact with pins C and E when the hair bundle is removed from the wave forming tool (see Figure 3). Liquid (0.5% lauryl sulfate triethanolamine ice water/
8M) for 1 minute, then add beaker 1 containing purified water.
The process of sequentially soaking in 0111, washing, and drying with a hand dryer was repeated 5 times (however, the fifth time was air-dried on a cotton cloth without using a hand dryer), and the value of Z in the above formula was measured. The wave degree before and after the processing was determined using the following formula.

The above-mentioned wave retention test is a fairly harsh test for hair, comparable to repeating hair washing five times in a row, which is commonly done in daily life.

The color tone was visually evaluated by five judges under a 500W 8-light color spotlight on the hair strands that had been subjected to the initial hair treatment.

The fading property was determined by visually evaluating the detergent-treated hair strands in the wave retention test in the same way as the color tone assessment above, and comparing the hair strands with the detergent-treated hair strands to determine the presence or absence of fading. It is.

The first to fourth agents used in the test were all aqueous solutions prepared with purified water, and their compositions other than the main agent were as follows. (All units are weight %) First agent ethanol
10.0% fatty acid jetanolamide
1.2% amphoteric surfactant 12.0% 2nd agent Nonionic surfactant 10.0% 3rd agent Ethanol 45.0% 4th agent Purified water only [Test 1] Test 1 was conducted according to the present invention. , it has been demonstrated that permanent wave formation treatment and hair dyeing treatment can be performed simultaneously on hair, and the sequestering agent incorporated in the first agent and the metal salt incorporated in the second agent.

It was confirmed that by changing the type and concentration of the coloring agent added to the third agent and the oxidizing agent added to the fourth agent, hair with various tones and waves can be obtained. The time required for hair treatment in each test was approximately 40 minutes. (However, in the trial number 4-1 test, the 17th
The standing time after applying P+ was 20 minutes. ) The results are shown in Table 11 and Table 1-2.

In addition, the 116 examples include one in which no sequestering agent was added to the first part, but the same treatment was applied to the second and subsequent parts (C-1), and one in which the coloring agent was omitted from the third part. (C-
2) The metal salt of the second part and the coloring agent of the third part were omitted (C-3).

(The following is a blank space) As shown in Table 1-1, various color tones can be obtained by changing the types of compounds having a hydroxyl group or a carboxyl group that are added to the first and third agents. In the test, propyl gallate, resorcinol,
Catechol, pyridoxine hydrochloride, hinoquinaol, L-
Ascorbic acid was used, ethyl acetoacetate was used as a compound having an enol type hydroxyl group, and benzoic acid was used as a compound having a carboxyl group.

Note that salicylic acid is a compound having both a phenolic hydroxyl group and a carboxyl group.

By the way, it is not necessary that the compounds having a hydroxyl group or a carboxyl group be the same for the first agent and the third agent. Rather,
By using different first and third agents in a free combination, a wide variety of color tones can be obtained. (See trial numbers 2-1 to 2-3) Furthermore, compared to the control examples (C-1 to C-3), all of the examples of the present invention are excellent in wave degree and wave retention. In particular, even when subjected to a severe wave retention test, it maintains a sufficient degree of wave. It can be seen that this is due to the action of the compounds having a hydroxyl group or a carboxyl group contained in the first agent, which assists the cystine bond cleavage action of the reducing agent.

Table 1-2 shows tests in which the types of oxidizing agents and metal salts were changed. It can be seen that by changing these, it is also possible to change the color tone of the hair.

[Test 2] Test 2 showed that according to the present invention, even when metal remains in the hair, a high degree of waving can be obtained, and the waving property does not deteriorate.

The test method was to perform the first treatment while the hair was straight without attaching it to the wave former, and after air-drying, perform the second treatment with the hair bundle attached to the wave former. Retention properties of 9 colors HMA and 111 colors were evaluated. However, the above-mentioned -th hair treatment was carried out using the chemical composition of Fragrance 2-1 in Table 1 above, and Table 2 shows the conditions for the second hair treatment.

The control examples are those in which the drug composition of Fragrance 2-1 was treated twice with the sequestering agent of the first agent omitted (C-4), and the sequestering agent of the first agent. After the first treatment with the metal salt of the second agent omitted, the second treatment with the same composition as C-4 (C-5)
In other words, C-4 is a control example in which metal remains in the hair at the time of the second treatment, and C-5 is a control example in which no metal remains in hair.

The results are shown in Tables 2-1 to 2-3.

(Margin below) As is clear from Comparative Example C-4 in Table 2-1, when the permanent wave forming treatment is applied to hair in which metal molecules remain, the degree of waving becomes very low (7, 0%), wave retention is completely lost (0%
). On the other hand, according to the present invention, it was possible to obtain extremely superior wave degree and wave retention compared to the control example. In addition, hair that does not contain metal molecules is subjected to permanent wave formation treatment and hair dyeing treatment (C-5
) According to the present invention, high wave degree and wave retention can be obtained. These effects are due to the action of compounds having a hydroxyl group or a carboxyl group that are blended into the first agent as a metal sequestering agent. By changing the blending ratio of the above-mentioned compounds, it is also possible to give various changes to the degree of waving and wave retention of hair.

Tables 2-4 and 5 below show that the same effect is obtained when the metal salt is a copper salt and when the reducing agent is used at a low concentration. .

C-6 and C-7 are each control examples. In addition, Table 2
In the test in which the reducing agent concentration was lowered in Example 1-5, the standing time after application of the first agent was 20 minutes.

(The following is a blank space) As can be seen from Table 2-4.5, sufficient effects are exhibited even if the concentration of the reducing agent is lowered or the types of metal salts and sequestering agents are changed. In addition, although it is said that the tests for Fragrance 13-1 to 13-3 showed sufficiently high values compared to Control Example C-6, the wave degree was slightly higher than the test results using iron salts mentioned above. It's getting lower. Generally, it is known that when 911 of the first agent is on the acidic side, the wave degree decreases. Therefore, as shown in Perfuming 14-1 to 14-3, it is clear that the effect of the present invention is further improved if pl+ is adjusted to the alkaline side using triethanolamine.

[Test 3] Test 1.2 is the test result of implementing the present invention on gray hair or bleached hair, but Test 3 proves that the effect of the present invention can also be obtained on normal black hair. It is. In this test example, the standing time after application of the first agent and the third and fourth agents were
The standing time after mixing and applying with the agent was 20 minutes, respectively.
I made it. The results are shown in Table 3.

As shown in the table above, the present invention has a high wave degree,
It can provide hair with wave retention properties, various color tones, and resistance to fading. For example, hinokitiol has a hair-nurturing effect, pyridoxine hydrochloride has a skin conditioning effect, resorcinol has a bactericidal effect, paraphenolsulfonic acid subsalt has an astringent effect, and propyl gallate has an antioxidant effect. By appropriately blending these, quality can be stabilized and various pharmacological effects can be imparted.

In addition, if the first agent po is alkaline, the permanent wave can be made stronger, and the second and third agents
If the pH of the agent is adjusted to be slightly acidic, the treatment can be performed under mild conditions.

In the above test example, the third and fourth agents were mixed and applied during hair treatment, but it is of course possible to apply the third and fourth agents sequentially, and it is also possible to apply the third and fourth agents in sequence. The fourth agent may be applied after a mixed solution with the agent is applied, left to stand, and washed with water.

The method of the present invention can be applied not only to forming permanent waves but also to straightening curly hair (so-called straight perm). In this case, the hair may be stretched and fixed on the plate while applying the first agent, and the same treatment may be performed.

In addition, permanent waves may be formed by a cold wave method or a heated wave method.
Furthermore, it is also applicable to only dyeing hair without forming permanent waves or the like.

“Effect of invention J The effects of the present invention will be described below.

(2) Formation of a desired shape such as permanent wave formation or hair straightening and hair dyeing can be performed simultaneously. Therefore, it is now possible to easily perform the forming process such as permanent wave and hair dyeing process within a much shorter time, which conventionally required a lot of effort and time because they were performed separately and sequentially. .

(5) The sequestering agent added to the first agent prevents the cystine bond cleavage reaction of the reducing agent in the first agent from being inhibited by metal salts such as iron or copper remaining in the hair. In other words,
To surely form permanent waves etc. even on hair that has been previously subjected to metallic hair dyeing treatment. Therefore, by using the present invention, it is possible to perform a forming treatment such as a permanent wave and a hair dyeing treatment simultaneously and in parallel any number of times.

■ Since metallic hair dye is used as the hair dye, it is possible to perform a strong and highly permanent hair dye treatment, and there is no sensitization or primary irritation to the human body (no safety issues). Excellent.

(2) By changing the composition of the hair treatment agent, a wide variety of tones can be obtained, and it is possible to dye not only gray hair but also blonde, red, chestnut, etc. hair, as well as black hair. Furthermore, since the degree of waving can be changed freely, it is possible to satisfy a variety of requests for fashionable hair.

In summary, the present invention provides a hair treatment agent and a hair treatment method of extremely high practical value.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing a wave forming device used for testing of the present invention, and FIG. 2 is a front view showing a state in which a hair bundle is attached to the wave forming device. FIG. 3 is a diagram illustrating the locations of the hair bundle where the degree of waving is measured. Patent Applicant Sanshido Pharmaceutical Co., Ltd. Representative Patent Attorney 1) Toshihiko Procedural Amendment (October 11, 1986

Claims (1)

[Scope of Claims] 1. Contains thioglycolates and mercapto compounds such as cysteine as a reducing agent, and also contains a phenolic hydroxyl group, an enol-type hydroxyl group, a similar hydroxyl group, or a carboxyl group as a sequestering agent for metals such as iron or copper. or a derivative thereof, a second agent containing a metal salt such as iron or copper, and a metal salt such as iron or copper contained in the second agent. A third agent containing a phenolic hydroxyl group, an enol-type hydroxyl group, a compound having a similar hydroxyl group or a carboxyl group, or a derivative thereof as a coloring agent, bromate salts, perborate salts, hydrogen peroxide solution, etc. and a fourth agent containing an oxidizing agent such as oxidizing agent. 2. A hair treatment method in which hair is simultaneously subjected to a forming treatment such as permanent waving and a hair dyeing treatment, which first contains thioglycolates and mercapto compounds such as cysteine as reducing agents, and iron or copper. Shaping the hair into a desired shape while or after applying a first agent containing a phenolic hydroxyl group, an enol-type hydroxyl group, a compound having a similar hydroxyl group or a carboxyl group, or a derivative thereof as a sequestering agent such as , After leaving the shaping state for a required period of time, the first agent remaining on the hair surface is removed by washing with water, etc., and then the second agent containing a metal salt such as iron or copper is applied to the hair. The second agent remaining on the hair surface is removed by applying it, leaving it for a required period of time, washing with water, etc., and then reacting with metal salts such as iron or copper contained in the second agent to develop color. After applying a third agent containing a phenolic hydroxyl group, an enol-type hydroxyl group, a compound having a similar hydroxyl group or a carboxyl group, or a derivative thereof to the hair as an agent, bromates, perborates, etc. A hair treatment method characterized by applying a fourth agent containing an oxidizing agent such as a hydrogen peroxide solution, leaving it for a required period of time, releasing the hair from its shape-holding state, and performing appropriate treatments such as washing and drying the hair. . 3. Mix the second agent and the third agent, apply to the hair, leave for the required time, wash with water, etc. to remove the second agent and third agent remaining on the hair surface, and then The hair treatment method according to claim 2, characterized in that a fourth agent is applied. 4. The hair treatment method according to claim 2, wherein the third agent and the fourth agent are mixed and applied to the hair.