JPH0160447B2 - - Google Patents

Description

[Detailed description of the invention]

[Industrial Application Field] The present invention relates to a treatment for forming permanent waves on hair or for straightening curly hair, curly hair, etc. (herein referred to as "a treatment for forming permanent waves, etc."), and a hair dyeing treatment. The present invention relates to a hair treatment agent comprising a combination of a permanent wave solution and a metallic hair dye, and a hair treatment method using the same. [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 Formation of permanent waves and hair dyeing have been widely practiced to care for hair. Additionally, as more and more people aim to create unique hairstyles, more and more people are choosing both permanent waves and hair dyeing, 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 fluids typically consist of a combination of a first fluid and a second fluid. 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 wave shape by winding it into a rod, and then the first
Apply the solution to the hair wrapped in a rod and leave it for the required time. Alternatively, the hair may be rolled into a rod 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. After washing, rinsing, etc. the hair that has become plastic in this way, the second liquid is then applied. The oxidizing agent 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 way, the rods are removed from the hair, washed with water, rinsed, dried, etc. The heated wave method is a method in which the first liquid is applied to the hair wound into a rod in the above-mentioned cold wave method, and then heated to a temperature not exceeding 60°C to accelerate the chemical reaction. The heated wave method consumes less reducing agent, oxidizing agent, etc. than the cold method, but requires a heating device for heating. On the other hand, hair dyeing methods are broadly classified into temporary hair dyeing methods and permanent hair dyeing methods that do not fade even with shampoo. The temporary hair dyeing method is a method in which the surface of the hair is temporarily coated with a hair dye such as color spray, color crayon, color rinse, etc. in which a pigment is mixed into a base. Therefore, there is a drawback that the color easily fades due to shampoo and the hair dyeing effect is 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 hair dyes mentioned above, typical vegetable hair dyes are made by adding citric acid or the like to a liquid obtained by boiling down henna leaves or a liquid obtained by kneading dry powder with boiling water to form an acidic solution. Apply this to your hair, pack it with a steamed towel, etc., and dye your hair. However, since this hair dyeing method has a reddish tone, the treatment is limited to a limited number of people. That is, it is difficult to satisfy various preferences regarding hair care, 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 hair dye used in the oxidative hair dyeing method consists of a first liquid whose main ingredient is an aromatic amino compound such as paraphenylene diamine or paratoluene diamine, and a second liquid whose main ingredient is an oxidizing agent such as hydrogen peroxide. Consists of liquid. To the first liquid, amines, polyphenols, etc. are added as modifiers that 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. The aromatic amino compound and the modifier in the first liquid are oxidized by this oxygen and penetrate into the hair while forming an oxidized dye. At the same time, the melanin pigment in the hair is oxidized and decomposed by the nascent oxygen. In this way, by allowing the dyeing reaction of keratin due to the production of oxidative dye and the decolorization reaction due to oxidative decomposition of melanin pigment to proceed in parallel, hair can be dyed in various tones. On the other hand, metallic hair dye is a two-component type (or a hair pre-treatment agent, etc.) consisting of a metal salt solution whose main ingredient is an iron compound and a coloring agent that exhibits a coloring reaction with the metal salt. It is a three-component drug. When the metal salt solution is applied to hair, metal molecules such as iron bond with keratin and become fixed on the hair surface. Next, when the coloring agent is applied, a coloring reaction occurs with the fixed metal, dyeing the hair to a predetermined color tone. [Problems to be Solved by the Invention] When hair is subjected to both permanent wave forming treatment such as permanent wave treatment and permanent hair dyeing treatment at a hair salon, barber salon, etc., each treatment is performed separately in sequence. A common method is to form a permanent wave or the like on the hair and then dye the hair, or to form a permanent wave or the like after the hair dye. 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 being rich in color and having little discoloration due to shampoo, but has the disadvantage of 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. Allergic dermatitis occurs at a high rate with repeated use. Moreover, many cases of the disease have been observed not only in hair dye recipients but also in the hairdressers who perform the treatments. Furthermore, it has been revealed that people who have experienced allergic reactions may experience cross-reactions with aromatic amino compounds with similar structures to the above-mentioned paraphenylene diamine and para-toluenediamine contained in sulfur drugs, anesthetics, etc. ing. 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 for permanent waves to form. Furthermore, the color may fade due to UV irradiation, acid shampoo, acid rinse, etc.
There were many problems. 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. It won't happen. However, metal molecules in metal hair dyes tend to react with reducing agents such as thioglycolate or cysteine in permanent wave solutions. Therefore, there is a problem that the reducing power is reduced and the strength of the permanent wave is weakened, and at the same time, the hair dyeing efficiency is also deteriorated. [Means for Solving the Problems] The present inventor has made extensive efforts with the aim of simultaneously performing a safe and highly permanent permanent wave formation process and hair dyeing process. As a result, by using the hair treatment chemicals and hair treatment methods described below, the above objectives were achieved. The hair treatment agent according to the present invention is characterized by comprising the following first to fourth agents. (1) Compounds containing thioglycolates or cysteine mercapto compounds as reducing agents, and having phenolic hydroxyl groups, enol-type hydroxyl groups, or similar hydroxyl groups, or compounds having carboxyl groups as sequestering agents for iron or copper. or a derivative thereof (2) A second agent containing a metal salt of iron or copper (3) A phenolic coloring agent that reacts with the iron or copper contained in the second agent to develop a color A third agent containing a hydroxyl group, an enol-type hydroxyl group, or a compound having a similar hydroxyl group, or a compound having a carboxyl group, or a derivative thereof (4) Contains bromates, perborates, or hydrogen peroxide as an oxidizing agent Fourth Agent In the first agent, the thioglycolates include thioglycolic acid, ammonium thioglycolate, sodium thioglycolate, potassium thioglycolate, and the like. In addition, the compounds having a phenolic hydroxyl group, an enol type hydroxyl group, or a similar hydroxyl group or a carboxyl group in the first and third agents, or derivatives thereof include gallic acid, gallic acid esters such as propyl gallate, salicylic acid, Salicylates such as sodium salicylate and potassium salicylate, salicylic acid esters such as methyl salicylate and phenyl salicylate, tannic acid and its esters, resorcinol, resorcinol acetate, pyrogallol, catechol, hydroquinone, hematein, Hamamelis water, nonylic acid vanillide, 2- Sodium hydroxy-5-nitro-2',4'-diaminoazobenzene-5'-sulfonate, phenol, nitrophenol, ortho-aminophenol, meta-aminophenol, meta-aminophenol sulfate, para-aminophenol sulfate, para-methylaminophenol sulfate, Orthoaminophenol sulfate/parachlorophenol/2-amino-4-
Nitrophenol, 2-amino-5-nitrophenol, 3,3'-iminodiphenol, sulfuric acid 2-
Phenols such as amino-5-nitrophenol, 2,4-diaminophenol hydrochloride, para-aminophenol, para-methylaminophenol, orthophenylphenol, pyridoxine hydrochloride, hexachlorophene, hinokitiol, cresol,
Cresols such as 5-aminoorthocresol, 5-aminoorthocresol sulfate, and chlorcresol, chlorxylenol, 1-amino-4-methylaminoanthraquinone, sodium picramate, 1,4-diaminoanthraquinone, 1,5
-dihydroxynaphthalene, α-naphthol, eugenol, isoeugenol, vanillin, paraphenolsulfonic acid subsalt, 2-(2-hydroxy-5-methylphenyl)benzotriazole,
Acetoacetic acid esters such as ethyl acetoacetate, ascorbic acid, gluconic acid and their salts, benzoic acid, benzoates such as sodium benzoate and disodium benzoate, amyl benzoate, isobutyl benzoate, pantothenyl benzoate, Benzoic acid esters such as sucrose benzoic acid ester, para-aminobenzoic acid, ethyl para-aminobenzoate, etc.
Refers to para-aminobenzoic acid esters such as para-aminobenzoic acid glycerin, and derivatives thereof. In addition to the above, the first agent may include EDTAs such as disodium edetate, trisodium edetate, tetrasodium edetate dihydrate, and tetrasodium edetate tetrahydrate. The metal salts of iron or copper in the second agent mentioned above include iron compounds such as ferrous sulfate, ferric chloride, triferric tetroxide, iron sesquioxide, and yellow iron oxide, as well as copper acetate, copper sulfate, and glycine. Refers to copper compounds such as copper. The bromate salts and perborate salts of the fourth agent are bromate salts such as potassium bromate and sodium bromate, and perborate salts such as sodium perborate. Next, a method of the present invention will be described in which hair is simultaneously subjected to a hair dyeing process and a hair dyeing process using the first to fourth agents described above. First, the hair is shaped into a desired shape by winding it around a rod while or after applying the first agent, and the hair is left in the shaped state for a required period of time, and then washed with water so that it remains on the hair surface. The first agent is removed. Next, a second agent containing a metal salt of iron or copper is applied to the hair, left for a required period of time, and then washed with water again to remove the second agent remaining on the hair surface. Next, after applying to the hair a third agent that exhibits a coloring reaction with iron or copper contained in the second agent, a fourth agent containing an oxidizing agent is applied and left for a required period of 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. Furthermore, washing with water after applying the first agent can be omitted. In this case, not only the reducing power of the first agent decreases as the reaction progresses, but also the second agent stops the reducing reaction of the first agent as described later, so even if washing with water is omitted, the hair will be damaged. There are almost no such things. 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. The second and third agents remaining on the hair surface are removed by
A method of applying an agent is also possible, or the third method described above is also possible.
It is also possible to mix the agent and the fourth agent and apply the mixture to the hair. Furthermore, the order in which the first to fourth agents are applied is changed to 1st, 2nd, 4th, 3rd agents, 1st, 3rd, 3rd agents, etc.
It is also possible to change the order of the 4th and 2nd drugs, the 1st, 4th, 2nd and 3rd drugs, or the 1st, 4th, 3rd and 2nd drugs. [Function] The functions of the first to fourth agents according to the present invention will be explained below. First, the reducing agent in the first agent breaks the cystine bonds in the hair, making the hair plastic while maintaining it in a desired shape. Furthermore, since the reducing agent in the first agent has the effect of swelling the hair, it also has the function of promoting the bond between the metal molecules in the second agent applied later and the keratin of the hair. The action of the sequestering agent added to the first agent will be described later. Next, by applying the second agent, iron or copper metal molecules are firmly bonded to keratin and fixed to the hair. By the way, metal salts have the property of easily reacting with reducing agents. Therefore, when the second agent is applied without washing with water after applying the first agent, the reduction reaction of the first agent can be stopped by the metal salt in the second agent. Compounds having phenolic hydroxyl groups, enol-type hydroxyl groups, or similar hydroxyl groups, or compounds having carboxyl groups, or derivatives thereof (hereinafter referred to as "compounds having hydroxyl groups or carboxyl groups") contained in the third agent are , combine with the metal molecules to produce colored molecules. Therefore, by applying the third agent, the hair is dyed to a predetermined color tone. The oxidizing agent in the fourth agent has the effect of recombining the cystine bonds cleaved by the first agent. Therefore, when the fourth agent is applied, the hair is fixed in a new cystine bond state while maintaining its previously shaped shape. Further, the fourth agent has the effect of oxidizing the colored molecule to make it more noticeable in color development, and the effect of oxidatively polymerizing compounds having a hydroxyl group or carboxyl group with the colored molecule to grow the colored molecule. ing. Therefore, by applying the fourth agent,
The entire hair is dyed evenly and deeply, and the fastness of the dye is improved. It is assumed that metal molecules are catalytically involved in the above oxidative polymerization reaction. Next, the action of the metal sequestering agent blended into the first agent will be explained. 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. By the way, compounds having a hydroxyl group or a carboxyl group have the effect of preventing iron or copper from reacting with a reducing agent. Therefore, if a compound having a hydroxyl group or a carboxyl group is incorporated into the first agent as a sequestering agent, even when hair that has been previously dyed with a metallic hair dye is treated with the first agent, The cystine cleaving action of the reducing agent is not inhibited. Rather, since compounds having hydroxyl or carboxyl groups also have reducing power, they assist in the cystine bond cleavage reaction.
Promotes hair plasticization. The actions of the first to fourth agents are highly independent, so even if the order of application is changed, the extent and content of the chemical reactions themselves caused by each agent will hardly be affected. Therefore, the order in which the first to fourth agents are applied can be changed appropriately as described above, and there is no significant difference in the hair treatment results. [Example] A specific example in which permanent wave forming treatment and hair dyeing treatment are performed simultaneously in accordance with the present invention will be described below. First, apply the first agent to the hair wrapped in a rod,
Or, while applying the first agent to your hair, wrap it in a knot.
Leave for 10-20 minutes. Thereafter, the first agent remaining on the hair and scalp surfaces is removed by washing with water. Or
Apply the second agent evenly to the curly hair without washing with water and leave it for 10 minutes to allow the iron or copper metal to penetrate into the hair. Thereafter, the second agent remaining on the hair surface is removed by washing with water again. Subsequently, apply the third and fourth agents to the hair in sequence, or
Alternatively, to save processing time, the third and fourth agents may be mixed and applied immediately before use. After leaving it for 10 to 15 minutes, remove the rod, wash with water, and dry. In this way, the time required to wind the rod (approximately 20
Permanent wave formation and hair dyeing are completed in about 1 hour, including 1 minute). However, the above-mentioned treatment time can be changed as appropriate depending on the condition of the hair of the recipient, the desired shape and degree of permanent waves, the degree of hair dyeing, and the like. The test results of the degree of wave, wave retention, color tone, fading resistance, and second permanent wave formation ability for hair that has been subjected to metallic hair dyeing treatment are shown in Tables 1 to 3 below. Shown below. The hair for the test was a bundle of 50 white or bleached hairs with a length of 20 cm, shampooed, washed with water, and dried. The wave forming tool used to form permanent waves is the first one.
As shown in the figure, seven pins A through G are planted in two parallel rows at a predetermined interval on a plate-like material. The diameter of the pin is 3mm, and the interval between each pin is
The distance between AB, BC,..., EF is 22.5mm, and the distance between AC, CE, and BD, DF, and FG is 20.0mm. The test method is to fix one end (root side) of the hair bundle, which has been washed with water and lightly drained, to pin A of the wave former as shown in Fig. After attaching the hair bundle to the hair bundle, the wave former is vertically placed so that pin A is on the upper side and 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 former is held horizontally, and the hair is processed. To treat hair, apply the first agent evenly to the hair strands with a dropper, leave it for 10 minutes, and then rinse with water for 30 seconds. Next, apply the second part in the same manner as the first part, leave it for 10 minutes, and then wash with water for 30 seconds. Next, apply a mixture of the third and fourth agents at a ratio of 2:1 in the same manner as the first agent, leave it for 15 minutes, remove the hair from the wave former, wash it with water for 30 seconds, and apply it with a cotton cloth. Dry on top. The degree of wave in each table was determined using the following formula. Wave degree (%) = (X-Z) / (X-Y) x 100 However, X: Length of hair fixed between pins CDE Y: Distance between pins CE Z: Hair bundle is fixed between pins C and E The distance between the points that were in contact with each other when removed from the wave former (see Figure 3) Wave retention can also be determined by soaking the treated hair bundle in a detergent solution (0.5% lauryl sulfate triethanolamine aqueous solution). After soaking for 1 minute, soaking in 10 beakers of purified water, washing, and drying with a hand dryer, repeat the process 5 times (however, for the 5th time, air dry on a cotton cloth without using a hand dryer). ), measure the value of Z in the formula to determine the wave degree before and after the processing,
It was calculated using the following formula. Wave retention (%) = Degree of wave after treatment / Degree of wave before treatment × 100 The above wave retention test was conducted on hair, which is comparable to repeating hair washing five times in a row, which is a common practice in daily life. It's a pretty tough test. The color tone was visually evaluated by five judges under a 500W daylight color spotlight on the hair strands that had undergone 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 %) Part 1 Ethanol 10.0% Fatty acid diethanolamide 1.2% Amphoteric surfactant 12.0% Part 2 Nonionic surfactant 10.0% Part 3 Ethanol 45.0% Part 4 Purified water only [ Test 1] Test 1 demonstrated that according to the present invention, permanent wave formation treatment and hair dyeing treatment can be performed simultaneously on hair, and that the metal sequestering agent blended in the first agent and the second agent Metal salts to be mixed,
By changing the type and concentration of the coloring agent blended in the third part and the oxidizing agent blended in the fourth part,
It was confirmed that 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 test No. 4-1, the standing time after applying the first agent was 20 minutes.) The results are shown in Tables 1-1 and 1-2. As control examples, the first part did not contain a sequestering agent and the second part and subsequent parts were treated in the same manner (C-1), and the third part omitted the coloring agent (C-1). C-2), and (C-3) in which the metal salt of the second agent and the coloring agent of the third agent were omitted.

【table】

【table】

[Test 2]

Test 2 showed that according to the present invention, even when metal remains in the hair, a high degree of wave can be obtained and the wave retention does not deteriorate. The test method was to perform the first treatment with the hair bundle 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. The retention, color tone, and fading resistance were evaluated. However, the above-mentioned first hair treatment was carried out using the chemical composition of Trial No. 2-1 in Table 1-1 above, and Table 2 shows the conditions for the second treatment. The control examples are a case in which the drug composition of Trial No. 2-1 was treated twice using the drug composition in which the metal sequestering agent of the first agent was omitted (C-4), and a case in which the metal sequestering agent of the first agent was treated twice. After the first treatment was performed with the metal salt of the second agent omitted, the second treatment was performed with a chemical having the same composition as C-4 (C-5). In other words, C-4 is a control example in which metal remains in the hair during 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.

【table】

【table】

[Table] As is clear from Control Example C-4 in Table 2-1, when the permanent wave forming treatment was applied to hair in which metal molecules remained, the degree of waving was extremely low (7.0%). , wave retention is completely lost (0%). On the other hand, according to the present invention, it was possible to obtain extremely excellent wave degree and wave retention compared to the control example. In addition, hair that does not contain metal molecules is subjected to permanent wave forming 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 wave and wave retention of the hair. Tables 2-4 and 5 below show that similar effects can be obtained from the above test even 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 control examples, respectively. In addition, in the test in which the reducing agent concentration was lowered in Table 2-5, the standing time after applying the first agent was 20 minutes.

【table】

[Test 3]

Tests 1 and 2 are test results in which the present invention was applied to gray hair or bleached hair, but Test 3 proves that the effects of the present invention can also be obtained on normal black hair. In this test example, the standing time after application of the first agent and the standing time after the mixed application of the third agent and the fourth agent were each 20 minutes. The results are shown in Table 3.

【table】

〔Effect of the invention〕

The effects of the present invention will be described below. A desired shape forming process such as permanent wave forming process or hair straightening process and hair dyeing process can be performed simultaneously. Therefore, conventionally,
The permanent wave formation process and hair dyeing process, which used to take a lot of time and effort to perform separately and sequentially, can now be easily performed in a much shorter time. The sequestering agent blended into the first agent prevents the cystine bond cleavage reaction of the reducing agent of the first agent from being inhibited by iron or copper metal salts remaining in the hair. In other words, permanent waves are reliably formed even on hair that has been previously subjected to metallic hair dyeing treatment. Therefore, by using the present invention, it is possible to repeatedly perform permanent wave formation treatment and hair dyeing treatment simultaneously and in parallel as many times as desired. Since metallic hair dye is used as the hair dye, it is possible to apply a strong and highly permanent hair dye treatment.
Moreover, it has no sensitization or primary irritation to the human body, and is excellent in safety. By changing the composition of the hair treatment agent, a wide range of color tones can be obtained, and it is possible to dye not only gray hair but also blonde, red, chestnut, etc., as well as black hair. In addition, since the degree of waving can be changed freely, it is possible to satisfy various demands for hair care. 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 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 wave is measured.

Claims (1)

[Claims] 1. A first agent, a second agent listed in (1) to (4) below,
A hair treatment agent comprising a combination of a third agent and a fourth agent. (1) Compounds containing thioglycolates or cysteine mercapto compounds as reducing agents, and having phenolic hydroxyl groups, enol-type hydroxyl groups, or similar hydroxyl groups, or compounds having carboxyl groups as sequestering agents for iron or copper. or a first agent containing a derivative thereof (2) a second agent containing a metal salt of iron or copper (3) a color that develops by reacting with the metal salt of iron or copper contained in the second agent A third agent containing a phenolic hydroxyl group, an enol-type hydroxyl group, or a compound having a similar hydroxyl group, or a compound having a carboxyl group, or a derivative thereof as an oxidizing agent (4) Bromates, perborates, or peroxide as an oxidizing agent Fourth Agent 2 Containing Hydrogen Water A hair treatment method in which hair is simultaneously subjected to a forming treatment such as a permanent wave and a hair dyeing treatment, and is characterized by comprising steps A to E listed below. hair treatment method. A Compounds containing thioglycolates or cysteine mercapto compounds as reducing agents, and compounds having phenolic hydroxyl groups, enol-type hydroxyl groups, or similar hydroxyl groups, or compounds having carboxyl groups as sequestering agents for iron or copper. Step B of shaping the hair into a desired shape while or after applying the first agent containing a derivative of Step C of applying a second agent containing a metal salt to the hair: After leaving it for a required period of time, the second agent remaining on the hair surface is removed by washing with water, and then the iron contained in the second agent is removed. Or a third compound containing a compound having a phenolic hydroxyl group, an enol type hydroxyl group, or a similar hydroxyl group, or a compound having a carboxyl group, or a derivative thereof as a coloring agent that develops color by reacting with a copper metal salt.
Step D of applying the agent to the hair; Next, Step E of applying a fourth agent containing bromate salts, perborate salts, or hydrogen peroxide as an oxidizing agent; and After leaving it for the required time, the hair is kept in a shape-retaining state. Step 3: Mix the second agent and the third agent, apply the mixture to the hair, leave it for a required period of time, and then wash with water to remove the residual agent on the hair surface. The hair treatment method according to claim 2, characterized in that the second agent and the third agent are removed, and then the 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. 5. The hair treatment method according to claims 2 to 4, characterized in that the hair treatment is performed without shaping the hair into a specific shape.