KR20110131110A - Method for deforming hair shape - Google Patents

Abstract

PURPOSE: A method for deforming hair shape is provided to prevent the deformation of hair tip by using a hair treatment agent. CONSTITUTION: A method for deforming hair shape comprises: a step of applying a hair treatment agent of pH of 6-10 containing sulfite or acid metabisulfite on hair; and a step of applying straitening property to hair by applying heat of more than 220 deg.C to the hair after the first step.

Description

Hair Deformation Treatment Method {METHOD FOR DEFORMING HAIR SHAPE}

The present invention relates to a hair deformation treatment method for straightening hair by using a one-component hair treatment agent having a hair deformation ability.

There are many ways to straighten hair. The representative method is the treatment method using hair straightener. This hair-shaft straightening process generally cleaves the disulfide bond in hair with a reducing agent, produces | generates a mercapto group, and straightens (straightens) using an apparatus, such as a comb. In this state, the oxidant is used to straighten the shaft hair by reforming new disulfide bonds at different positions than before.

In this regard, in the hair-shaft straightening treatment, a two-component hair treatment agent composed of a first agent containing a reducing agent and a second agent containing an oxidizing agent is usually used (Patent Documents 1, 2, etc.).

Japanese Patent Laid-Open No. 2000-256146 JP 2002-356408 A

By the way, in the hair-shaft straightening process using a two-component hair treatment agent, the process of apply | coating the 1st agent which mix | blended the reducing agent to the hair | bristle hair as mentioned above, followed by the process of spreading hair | bristle hair, and apply | coating the 2nd agent which mix | blended the oxidizing agent to single shaft hair The process to become is essential. Moreover, since the process of washing hair and the process of drying are also normally provided between each process, the long time of 3 to 5 hours is needed from the start of a process to completion. In this regard, there is a demand for a method capable of completing the hair straightening process in a shorter time.

Therefore, the hair-shaft straightening treatment method which reduced the number of processes using the single-form hair treatment agent is examined. It is difficult to mix the reducing agent for cleaving the disulfide bond of hair and the oxidizing agent for oxidizing the mercapto group produced | generated by reduction in one treatment agent, and to effectively draw out both functions. Thus, for example, it is conceivable to mix a reducing agent with a one-component hair treatment agent, and to disulfide bond the mercapto group thus produced again by oxidation with air.

However, it is difficult to oxidize the mercapto group produced by the reducing agent without using an oxidizing agent and to disulfide bond again. In addition, in the case of using such a hair treatment agent, there is a problem that the hair tip is crushed in particular.

In this regard, development of a treatment method capable of providing straightness to the hair without the effort and time, and suppressing the curling of the hair tip after the treatment is required.

This invention is made | formed in view of the said situation, The objective is to provide the hair deformation processing method which can straighten hair well, suppressing the crushing of the hair tip in the hair after a process.

The hair modification treatment method of the present invention which can achieve the above object comprises the step (I) of applying a one-component hair treatment agent having a pH of 6 to 10 containing at least one sulfite or hydrogen sulfite salt to the hair; It has a process (II) which heats more than 220 degreeC to the said hair after a process (I), and makes the said hair straight.

As the reducing agent, thioglycolic acid, cysteine or salts thereof is generally used as the reducing agent. However, these reducing agents are excellent in the function which cut | disconnects the disulfide bond in hair as mentioned above. Therefore, in the hair treated with the hair treatment agent incorporating such a reducing agent, many disulfide bonds in the hair are cleaved to generate a mercapto group. Thus, unless these mercapto groups are oxidized with an oxidizing agent and disulfide bonds are not formed again, crushing occurs in particular at the end of the hair.

Sulfite and hydrogen sulfite are also known as reducing agents for hair treatment agents. Unexpectedly, however, the present inventors have found that, in the hair treatment agent containing sulfite or hydrogen sulfite salt, unlike the other reducing agents, the cleavage of disulfide bonds due to reduction hardly occurs.

On the other hand, in the hair treatment agent which mix | blended sulfite or hydrogen sulfite, although the correction ability of shaft hair was inferior, it discovered that the hair which apply | coated this hair treatment agent to the hair more than 220 degreeC can make a favorable straight hair. In addition, when the hair coated with a hair treatment agent containing a reducing agent such as thioglycolic acid, cysteine or salts thereof is treated at a temperature of more than 220 ° C, the cleavage of the disulfide bond further proceeds. On the other hand, it was also found that even when the hair coated with the hair treatment agent containing sulfite or hydrogen sulfite was treated at a temperature of more than 220 ° C, the cleavage of disulfide bonds did not proceed.

In the hair deformation treatment method of the present invention, based on these findings, the hair to which the hair treatment agent of one formulation having a pH of 6 to 10 is formulated by combining sulfite or hydrogen sulfite is treated at a temperature of more than 220 ° C. . According to the hair deformation treatment method of the present invention, the hair is not straightened, for example, as much as a treatment method using a conventional two-head hair straightener. However, in the treatment method of the present invention, the number of processes until completion of treatment can be shortened, thereby shortening the treatment time. In addition, the treatment method of the present invention suppresses the crushing of the hair tip which is likely to occur in the treatment method using a single-shaft straightener, and can straighten hair for a relatively long time.

ADVANTAGE OF THE INVENTION According to this invention, the hair deformation treatment method which can straighten hair well can be provided, suppressing the crushing of the hair tip in the hair after a process.

Step (I) according to the present invention method is a step of applying a one-component hair treatment agent to the hair.

The one-component hair treatment agent used in step (I) has a hair deforming ability and is a mixture of at least one sulfite or hydrogen sulfite salt.

As a sulfite which can be mix | blended with a 1-type hair treatment agent, sodium sulfite, potassium sulfite, calcium sulfite, barium sulfite, ammonium sulfite, etc. are mentioned, for example. Moreover, as a hydrogen sulfite salt which can be mix | blended with a 1-type hair treatment agent, sodium bisulfite, potassium hydrogen sulfite, ammonium bisulfite, etc. are mentioned, for example. You may use only 1 type, or 2 or more types of said sulfite or hydrogen sulfite. Further, for example, one or more sulfites and one or more hydrogen sulfite salts may be used in combination. Among these, sodium sulfite or sodium hydrogen sulfite is preferable from the standpoint of stability and safety.

Compounding amount of sulfite or hydrogen sulfite in a one-component hair treatment agent (when both sulfite and hydrogen sulfite are blended in a one-component hair treatment agent, the total amount of the sulfite or hydrogen sulfite salt in a one-component hair treatment agent. It is preferable that it is 0.5 mass% or more from a viewpoint which ensures the effect (effect of straightening shaft hair) by the use more favorable, and, as for the same below, it is more preferable that it is 4 mass% or more. However, when the amount of sulfite or hydrogen sulfite in the one-component hair treatment agent is too large, there is a possibility that the hair deforming capacity may decrease, and the effect of suppressing crushing of the hair tip may be reduced. Therefore, it is preferable that it is 10 mass% or less, and, as for the compounding quantity of the sulfite in a one-component hair treatment agent, it is more preferable that it is 8 mass% or less.

In general, it is known that sulfite or hydrogen sulfite have a high reducing ability in an acidic region. However, in the method of the present invention, by adjusting the pH of the one-component hair treatment agent to 6 to 10, the hair deformation ability is increased, and the hair tip after the treatment is suppressed.

PH of a one-component hair treatment agent can be adjusted by mix | blending an alkali agent to a one-component hair treatment agent as needed, for example. Examples of such alkali agents include sodium carbonate, ammonium bicarbonate, ammonia water, potassium hydroxide, sodium hydroxide, sodium borate, monoethanolamine, diethanolamine, triethanolamine, and the like.

One-component hair treatments contain water as the main medium. In addition, "a water is a main medium" as used in this specification means that the quantity of water in all the medium in a one-component hair treatment agent is 50 mass% or more. As the medium, only water may be used, and if necessary, an organic solvent such as lower alcohol (alcohol having 6 or less carbon atoms) such as ethanol and isopropanol may be used in combination with water. Moreover, it is preferable that the compounding quantity of the medium in a one-component hair treatment agent is 40-95 mass%, for example.

Moreover, it is preferable that the dithiodiglycolate salt is mix | blended with the single-component hair treatment agent. Thereby, the hair deformability becomes higher, the hair after the treatment can be made more straight, and the softness of the hair can also be increased.

Examples of the dithiodiglycolate include diiammonium dithiodiglycolate, dithiodiglycolic acid dimonoethanolamine, dithiodiglycolate ditriethanolamine, and the like. Only one of these may be used or two kinds thereof. You may use the above together.

It is preferable that the compounding quantity of the dithiodiglycolate salt in a one-component hair treatment agent is 0.5 mass% or more from a viewpoint which ensures the effect by the use better. However, when the amount of dithiodiglycolate in the one-component hair treatment agent is too large, an unpleasant odor generated during the procedure tends to be strong. Therefore, it is preferable that the compounding quantity of the dithiodiglycolate in a one-part hair treatment agent is 10 mass% or less.

Moreover, it is preferable to mix | blend a water-soluble polymer with a one-component hair treatment agent. Thereby, the viscosity of a one-part hair treatment agent can be enlarged and operability can be improved. For example, it becomes possible to make application to hair easier. Furthermore, by mix | blending a water-soluble polymer, the crushing of the hair tip after a process can be suppressed more favorably.

Examples of the water-soluble polymer include natural polymers such as carrageenan, agar, xanthan gum, gelatin, pectin, tamarind seed polysaccharides, locust bean gum, guar gum, gum arabic, tragacanth gum, hyaluronic acid or salts thereof, and chitosan; Methyl cellulose, ethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, hydroxypropyl methyl cellulose, carboxymethyl cellulose, cationic cellulose, starch phosphate ester, sodium starch glucolate, amphoteric starch, cationized guar gum, carboxymethyl Natural polymer derivatives such as hydroxypropylated guar gum and hydroxypropylated guar gum; Synthetic polymers such as polyvinylpyrrolidone, carboxyvinyl polymer, and acrylic acid alkyl methacrylate copolymer; These etc. are mentioned, Only 1 type may be used among these and it may use 2 or more types together.

It is preferable that the compounding quantity of the water-soluble polymer in a one-component hair treatment agent is 1 mass% or more from a viewpoint which ensures the effect by the use more favorable. However, when there is too much water-soluble high molecular weight in a one-part hair treatment agent, the viscosity of a one-part hair treatment agent will become large too much and there exists a possibility that the operability may fall. Therefore, it is preferable that the compounding quantity of the water-soluble polymer in a one-pack hair treatment agent is 10 mass% or less.

Moreover, in addition to each component mentioned above, the single-component hair treatment agent can be mix | blended in the range which does not impair the effect of this invention in the various components used by normal hair cosmetics.

There is no restriction | limiting in particular about the formulation of a one-component hair treatment agent, It is good also as any formulation, such as a lotion form, an emulsion form, cream form, a gel form.

In the step (I), the hair coated with the one-component hair treatment agent is left to stand for about 3 to 30 minutes, for example, and then the step (II) is preferably performed. Thereby, the effect of making a one-part hair treatment agent penetrate well in hair and straightening hair can be heightened more.

Process (II) of this invention method is a process of applying heat to the hair after apply | coating a one-part hair treatment agent, and makes a hair straight by this process.

In step (II), the hair is subjected to heat exceeding 220 ° C. If the temperature at this time is too low, the hair cannot be made a good straight. It is preferable that it is 225 degreeC or more, and, as for the temperature of the heat | fever added to hair in a process (II) to raise the effect which makes hair straighten, it is more preferable that it is 230 degreeC or more. However, if the temperature of the heat applied to the hair is too high, the hair may be damaged, so the temperature is preferably 250 ° C. or less.

In the step (II), heat is applied in a straight state in which the hair is straight. Specifically, for example, a piece of hair is straightened in a straight shape to a straight hair iron plate portion having a temperature of 220 ° C. or higher. It is preferable to heat the hair in such a way that it flows from the inside of the hair to the end of the hair, rather than just pressing it.

As a straightening hair iron, what is necessary is just to be able to heat the plate part (surface temperature) more than 220 degreeC, and to straighten hair under heating, and various things can be used without being specifically limited to it.

In addition, the step (II) may be performed immediately after leaving the hair coated with the one-component hair treatment agent in the step (I), preferably after the above-mentioned time, but the step of providing water washing the hair after the leaving is provided. After that, step (II) may be performed. Thereby, the effect of straightening hair can be heightened more.

In addition, after the water washing step after the step (I), a step of drying the hair may be provided, followed by the step (II). Moreover, in this drying process, it is preferable to make a part of water remain | survive on hair, and this can further heighten the effect of straightening hair.

After process (II), you may provide the process of washing and drying hair as needed. Moreover, you may provide the process of washing hair before a process (I), and the process of drying hair after washing.

In the method of the present invention, unlike the conventional hair straightening treatment method using a two-component hair treatment agent, a step of applying a second agent containing an oxidizing agent to the hair to fix the straight shape, or washing the second agent. And subsequent drying steps can be omitted. Therefore, for example, since the processing can be completed within 1 hour (more than 30 minutes), the processing time can be significantly shortened compared to the conventional shaft hair straightening treatment method.

[Example]

EMBODIMENT OF THE INVENTION Hereinafter, this invention is described in detail based on an Example. However, the following examples do not limit the present invention. In addition, in the following Examples etc., "%" means the "mass%." In addition, as a compounding quantity of a one-component hair treatment agent, the compounding quantity of each component is represented by% so that the whole may be 100%, and in Table 1-Table 3 of the later table | surface, the indication of the% is abbreviate | omitted and only the numerical value which shows a compounding quantity is shown.

Experiment 1: Effect Confirmation Test by Hair Strain Treatment

<Preparation of a one-component hair treatment agent>

The one-component hair treatment agents of Preparation Examples 1 to 18 were prepared by the compositions shown in Tables 1 to 3.

In addition, in the column of the water of Tables 1-3, "to make it 100" means that the total amount of each component other than the water which comprises a one-component hair treatment agent is added so that it may become 100%. In addition, "5.5E.O." in "polyoxyethylene cetyl ether (5.5EO)" of Table 1-Table 3 means that the average added mole number of ethylene oxide is 5.5. In addition, the "proper amount" of the column of the "monoethanolamine liquid" and "phosphoric acid aqueous solution" in Table 1-Table 3 means that the pH of each one-part hair treatment agent was used by the amount used as the value shown in each table | surface.

<Evaluation of Hair After Treatment>

The hair deformation treatment was performed using the one-component hair treatment agent of Preparation Examples 1 to 18, and the spreading of the hair after the treatment, the curling of the hair tip, and the softness were evaluated.

First, a large number of shaft hairs having a length of 25 cm (length measured in a natural state without spreading) were collected from the same person, and 1.5g of these were gathered to produce a plurality of hair bundles. These hair | bristle bundles were wash | cleaned with 10% sodium laureth sulfate aqueous solution, washed with water, and it dried and used as the test hair | bristle bundle.

After apply | coating 2 g of single-use hair treatment agents to each test hair | bristle bundle, it was left to stand at 50 degreeC warmed for 15 minutes, and it washed with water, and dried in the state which left some water | moisture content. Then, these test hair bundles were sandwiched between the plate portions of the straight hair irons heated to a predetermined temperature, and passed through as if they flowed from the inside of the hair toward the ends of the hair, thereby completing the treatment. In addition, the heating temperature by the straight hair iron was 180 degreeC, 200 degreeC, and 230 degreeC.

Then, five expert panelists evaluated and scored the hair spreading, the curling and the softness of the hair tip according to each test hair bundle after the treatment according to the following criteria.

(Evaluation standard of hair unfolding)

Unfolded… … 0 point

Slightly stretched… … 1 point

Unfolded… … 2 points

(Evaluation standard of curling of hair tip)

Quack… … 0 point

Somewhat crumpled… … 1 point

It doesn't look clumsy in appearance, but when you touch it, you can see it crumbling… … 2 points

Not crumbling… … 3 points

(Evaluation standard of the softness of the hair)

Stiffness compared to untreated hair… … 0 point

Almost the same as untreated hair… … 1 point

Softer than untreated hair… … 2 points

Considerably soft compared to untreated hair… … 3 points

In addition, for each evaluation result, the average value of the scores of all panelists was calculated | required, and according to the following reference | standard, the hair spreading, the curl of the hair tip, and the softness of the hair | bristle bundle after the test were evaluated according to the following criteria.

(Straightening of hair)

0 or more, but less than 1.6: do not straighten

1.6 or more: unfolded

(Shuffle of hair ends)

0 or more and less than 2.2: crumble

2.2 or higher, less than 2.6: rarely shrunken

Score 2.6 or higher: Not crushed

(Softness of the hair)

0 or more and less than 2 points: No softness

2 points or more, less than 2.4 points: smooth

2.4 or higher: fairly smooth

Among these results, when the heating temperature by the straight hair iron is 180 degreeC (comparative examples 1-18) to Table 4, and the case where 200 degreeC (comparative examples 19-36) is set to Table 5, it is 230 degreeC. One case (comparative examples 37-41 and Examples 1-13) is shown in Table 6, respectively.

As shown in Table 4-Table 6, in the hair deformation treatment method of Examples 1-13 which performed heating by the hair iron for straightness at appropriate temperature using the one-component hair treatment agent of a suitable composition and pH, the hair after a process While making it possible to make a good straight, the hair crushing is also suppressed. In addition, the hair after the treatment by the hair deformation treatment methods of Examples 1 to 13 has good softness.

On the other hand, in the hair deformation treatment method of Comparative Examples 1-36 in which the heating temperature by the straight hair iron is inadequate, in particular, the hair after a process is not made to be a good straight. In addition, in some of the hairs after the treatment by these treatment methods, hair curled or softened.

On the other hand, although the heating temperature by a straight hair iron is appropriate, the hair deformation treatment method of Comparative Examples 37 to 39 using a one-component hair treatment agent in which a reducing agent used in a conventional hair straightener is used in place of sulfite or hydrogen sulfite. In Esau, the hair after the treatment could be made a good straight, but crushing occurred at the end of the hair.

Moreover, although the heating temperature by the straightening hair iron is suitable, in the hair deformation treatment method of the comparative example 40 using the one-part hair treatment agent whose pH is too low, it is inadequate to make the hair after a process the favorable straight. Although the heating temperature by the straightening hair iron is appropriate, in the hair deformation treatment method of Comparative Example 41 using a one-component hair treatment agent having a high pH, the hair curled at the end of the treated hair.

Experiment 2: Determination of the amount of disulfide bond in hair after treatment with a one-component hair treatment agent

As a one-component hair treatment agent, hair treated by using a 4% sodium sulfite aqueous solution (pH 8.0, Preparation Example 19) and a 7% aqueous ammonium thioglycolate solution (pH 9.2, Preparation Example 20) was used. The amount of disulfide (SS) bond in the mixture was determined as the residual ratio of untreated hair to SS bond (hereinafter referred to as "survival ratio of unbound hair of SS bond amount").

The hair treatment was carried out in the same manner as in Experiment 1 except that the one-component hair treatment agent of Preparation Example 19 was used, and the sample (1) which did not perform heating by the straight hair iron and the straight hair iron was The sample (2) which performed heating at 180 degreeC, and the sample (3) which performed the heating by the straight hair iron at 230 degreeC were produced. In addition, except that the single-component hair treatment agent of Preparation Example 20 was used, and the sample 4 treated in the same manner as in Experiment 1, except that the heat treatment by the straight hair iron was not used, this one-component hair treatment agent was used. A sample (6) subjected to the same treatment as in Experiment 1 and subjected to the same treatment as the sample (5) and the sample (5), which were heated at 180 ° C. with a straight hair iron, and then subjected to oxidation treatment using sodium bromate. Was produced.

In addition, the amount of S-S binding of each sample and untreated hair was determined as follows using polarography.

In this measurement, since only the amount of S-S bond cannot be directly measured, the total amount of S-S bond and S-H bond was measured once, and the amount of S-S bond was obtained by removing the amount of S-H bond measured separately from this value.

The measurement sample of the total amount of S-S bond and S-H bond was prepared as follows. Urea: 240.24 g, ammonium chloride: 4.279 g, potassium chloride: 18.6375 g, sodium sulfite: 12.604 g and gelatin: 0.05 g were measured in a 500 mL beaker, to which purified water: 400 mL was added. The mixture was warmed up to 70 DEG C to dissolve the gelatin, the pH was adjusted to 9.3 by adding ammonia water, and further, purified water was added to make 500 mL, and then transferred to a brown bottle. Subsequently, 0.1712 g of methylmercuric iodide (methylmercuric iodide) was added, stirred, and dissolved in this brown bottle to prepare a measurement reagent, and stored at 4 ° C. Seven measurement reagents were prepared, and each of the samples (1) to (6) and each of 10 mg of untreated hair was put in a separate measurement reagent to obtain a measurement sample.

In addition, the measurement sample of the amount of S-H bond was prepared as follows. Phase A consisting of trishydroxymethylaminomethane buffer (100 mL, concentration 0.1M, pH 7, 0.1M added KCl), phase B of gelatin aqueous solution (25 mL, concentration 0.25%), potassium chloride: Purified water was added to 3.73 g to obtain 500 mL. 2.5 mL was extracted from this, 2.5 mL of methyl mercury iodide solution (dimethylformamide solution of 0.1 M density | concentration) was added, it mixed with the prepared phase C, the mixture was stirred, the measurement reagent was prepared, it put in the brown bottle, and it stored at 4 degreeC. . Seven measurement reagents were prepared, and each of the samples (1) to (6) and each of 40 mg of untreated hair was put in a separate measurement reagent to obtain a measurement sample.

The total amount of SS bonds and SH bonds in the measurement sample of the total amount of SS bonds and SH bonds and the amount of SH bonds in the measurement sample of the SH bond amount are "DEOXYGEN STAND DS-100" (trade name) "POLAROGRAPHIC" manufactured by YANACO Corporation. ANALYZER P-3000 (trade name) and "dropping mercury electrode stand P-1000ST (trade name)" were measured. And, for each of the samples (1) to (6) and untreated hair, the amount of SH bond is removed from the total amount of SS bond and SH bond, and untreated hair of the amount of SS bond of the samples (1) to (6). The remaining ratio (%) of the amount of SS bonds in was calculated. These results are shown in Table 7.

As shown in Table 7, the hair treated with the one-component hair treatment agent of Preparation Example 20, which contains a thioglycolate salt (ammonium thioglycolate), which is commonly used as a reducing agent for general hair straighteners, is heated by straight hair iron. Before (sample 4) and after heat treatment at 180 ° C. (sample 5), the amount of SS bonding is reduced. In this respect, it can be seen that the cleavage of the S-S bond was generated by the reduction. And the amount of S-S bonds is increasing by performing the process (sample 6) by an oxidizing agent. In this respect, it can also be seen that the S-S bond is being reformed. The treatment in the sample 6 corresponds to a treatment with a two-head hair straightener. These results show that in the case of a hair treatment agent using a general reducing agent, treatment with an oxidizing agent is necessary in order to increase the amount of S-S bond of the hair and make it in the same state as in the untreated state.

On the other hand, in the hair which mix | blended sodium sulfite and treated with the one-component hair treatment agent of the preparation example 19 which made pH to 8.0, after heating at 180 degreeC, before heating with the straight hair iron, after heating at 230 degreeC, In either case, the amount of SS bond is almost equal to that of untreated hair. In this respect, it can be seen that cleavage of the SS bond due to reduction hardly occurs. From these results, in the treatment using the one-component hair treatment agent of Preparation Example 19, that is, the one-component hair treatment agent in which the sulfide salt or the hydrogen sulfite salt were mixed and the pH was set to an appropriate value, the hair treatment agent in which the other general reducing agent was blended ( It is estimated that the provision of straightness to the hair is performed by a mechanism different from the case of the treatment using the first agent in the hair-shaft straightener). In addition, from the above results, in the one-component hair treatment agent (the one-component hair treatment agent in Preparation Example 19) in which sulfite or hydrogen sulfite was blended and pH was adjusted to an appropriate value, oxidation treatment for returning the amount of SS bonding to the state of untreated hair. It can also be seen that unnecessary.

Claims (10)

A step (I) of applying a one-component hair treatment agent having a pH of 6 to 10 containing at least one sulfite or hydrogen sulfite salt to the hair,
After the said process (I), the hair deformation treatment method characterized by having the process (II) which adds heat more than 220 degreeC to the hair, and gives a straightness to the hair. The method of claim 1,
The hair deformation treatment method according to step (II), wherein the heat applied to the hair is set to 230 ° C or higher. The method according to claim 1 or 2,
A hair deformation treatment method comprising a step of washing the hair with water between step (I) and step (II). The method of claim 3,
And a step of drying the hair between the step of washing the hair and the step (II). 5. The method according to any one of claims 1 to 4,
A hair deformation treatment method comprising 0.5 to 10% by mass of a sulfite or hydrogen sulfite salt in a one-component hair treatment. The method according to any one of claims 1 to 5,
A method for treating hair deformation, wherein the sulfite in the one-component hair treatment agent is sodium sulfite. The method according to any one of claims 1 to 5,
A method for treating hair deformation, wherein the hydrogen sulfite salt in the one-component hair treatment agent is sodium hydrogen sulfite. The method according to any one of claims 1 to 7,
A hair treatment treatment method, wherein the one-component hair treatment agent further contains dithiodiglycolate. The method of claim 8,
A hair modification treatment method, wherein the compounding amount of dithiodiglycolate in the one-component hair treatment agent is 0.5 to 10% by mass. The method according to any one of claims 1 to 9,
A hair treatment treatment method characterized in that the one-component hair treatment agent further contains a water-soluble polymer.