JP2552409B2 - Two-component hair treatment composition and hair treatment method - Google Patents

Description

Detailed Description of the Invention

[0001]

[Industrial field of application] The present invention is directed to smoothness and softness of hair.
A two-component hair treatment composition and a two-component hair treatment composition which have a moist feel and a conditioning effect such as imparting a cohesion to hair that easily spreads hairstyle, and the effect of which is maintained semipermanently The present invention relates to a method for treating hair with an agent composition.

[0002]

A conventional method for imparting smoothness, softness, and moisturizing feel to hair is a technique found in agents such as rinse treatments used after washing hair. This is a method in which conditioning components such as cationic polymers, cationic surfactants, oils, silicon derivatives, humectants, proteins and their hydrolysates, animal and plant extracts are left on the hair surface or its surface layer.

However, the conditioning effect imparted in this way has only a temporary texture improving effect which is lost by washing the hair about once or twice. However, as can be seen in today's lifestyle, the frequency of hair washing has increased by almost every day, and the conditioning effect is almost completely lost during the first hair wash after treatment, and the friction and entanglement between hair that occurs during daily hair washing. Damage to hair due to washing hair is a serious problem because of the lack of protection against physical damage caused by hair.

Therefore, there has been a strong demand for the development of an agent having excellent shampoo resistance and having a semipermanently long-lasting conditioning effect. Conventionally, a technique for fixing an anionic or amphoteric polymer on hair by using a cationic or amphoteric polymer and an anionic or amphoteric polymer as an agent having such excellent shampoo resistance, that is, between polymers having different charges A technique using the complex of is proposed. A technique for fixing such an anionic or amphoteric polymer on hair is disclosed in, for example, JP-A-59-23100.
8, JP-A-59-172413, JP-B-62-716
4, JP-B-62-7889, JP-B-01-12726,
Japanese Patent Publication No. 01-188547, Japanese Patent Publication No. 02-4446, Japanese Patent Publication No. 03-14805, Japanese Patent Publication No. 03-21524, Japanese Patent Publication No. 03-22843, Japanese Patent Publication No. 03-86810, etc. It is a mechanism in which an anionic or amphoteric polymer is electrically neutralized and deposited on the hair to remain. The electrical neutralization of the polymer is carried out by the cationic or amphoteric polymer in the case of anionic polymers and by the interaction of the cationic or anionic or amphoteric polymers in the case of amphoteric polymers.

[0005]

However, there are some points to be further improved in the above proposals, for example, by further strongly binding the hair and the cationic or amphoteric polymer,
Further, it is desirable to maintain the effect. Further, only by combining an ordinary carbon chain (for example, only carbon skeleton such as vinyl and acrylic) type ionic polymer, anionic or amphoteric polymer remains on the hair after the treatment. In this case, there are problems such as strong creaking and stiff feeling, softness and lack of suppleness, and loss of appearance and gloss, and improving the flexibility, moistness and smoothness of the treated hair. Is desired.

Therefore, it is an object of the present invention to provide softness to hair,
It is an object of the present invention to provide a two-component type hair treatment composition and a hair treatment method, which impart a sufficient moist feeling and further smoothness, and the conditioning effect lasts semipermanently.

[0007]

[Means for Solving the Problems] In view of the above circumstances, the inventors of the present invention have made extensive studies, and as a result, (a) a reducing substance and (b)
By treating hair with a two-part hair treatment composition comprising a first agent containing a cationic polymer or an amphoteric polymer and (c) a second agent containing an anionic silicone polymer or an amphoteric silicone polymer, The present invention has been completed on the finding that the above goal is achieved.

That is, the present invention comprises (a) a first agent containing a reducing substance and (b) a cationic polymer or an amphoteric polymer, and (c) a second agent containing an anionic silicone polymer or an amphoteric silicone polymer. And is applied to the hair in the order of the first agent and the second agent 2
The present invention provides an agent type hair treatment composition. Further, the present invention is a hair treated with the first agent, was left for a certain time, the second agent is applied to the hair without or intermediate rinsing performing intermediate rinsing, after again it left a certain time The present invention provides a hair treatment method characterized by performing final rinsing.

By treating the hair with the above two-component hair treatment composition, the silicone polymer is semipermanently fixed on the hair according to the following mechanism of action. That is, a large amount of (b) the cationic polymer or amphoteric polymer is fixed on the hair by treating the first agent, and (c) the anionic silicone polymer or the amphoteric silicone polymer in the second agent to be treated next ( b) The silicone polymer strongly adheres to the hair because it is electrically bound to the cationic polymer or amphoteric polymer to form a complex. Therefore, smoothness
It is possible to impart a feeling of softness and moistness, and these effects last semipermanently.

In this case, in the present invention, the first agent may contain a small amount (amount that does not cause damage such as swelling of hair, exfoliation of hair epidermis, deterioration of elasticity) of (a) reducing substance. , (A) a cationic polymer or amphoteric polymer, which is extremely strongly bonded as compared with a system containing no reducing substance, can be used as an adapter. Then, (c) the anionic silicone polymer or the amphoteric silicone polymer is allowed to act to form a strong composite complex of both, thereby enhancing the sustainability of the effect.

Further, (a) the reducing substance is preferably used in the range of 0.05 to 1.5% by weight in the first agent as will be described later, and is used in the oxidizing process as in the permanent waving agent system. do not need. Furthermore, there is little creaking or stiff feeling when an anionic or amphoteric polymer is excessively left on the hair. Hereinafter, the two-component hair treatment composition of the present invention and the hair treatment method using the two-component hair treatment composition will be described in detail.

(A) Reducing substance As the (a) reducing substance used in the first part of the two-component type hair treatment composition of the present invention, thioglycolic acid and salts thereof generally used in hair treatment agents are used. (Preferable salts are alkali metal salts such as ammonium salts, sodium salts and potassium salts and alkaline earth metal salts such as calcium salts), cysteine and salts thereof, cysteine derivatives such as N-acetyl-L-cysteine, thiolactic acid and Salts thereof (preferred salts are ammonium salts, monoethanolamine salts, triethanolamine salts, sodium salts, alkali metal salts such as potassium salts),
Sulfurous acid and salts thereof (preferred salts are alkali metal salts such as ammonium salts, sodium salts, potassium salts) and bisulfurous acid and salts thereof (preferred salts are alkali metal salts such as ammonium salts, sodium salts, potassium salts). ), Thioglycerin, etc., and cysteine derivatives such as N-acetyl-L-cysteine, sulfurous acid and salts thereof, and bisulfite are particularly preferable.

The above-mentioned (a) reducing substance can be used alone or in combination of at least one kind, and is used in the first agent in an amount of 0.05 to 1.5% by weight (hereinafter simply referred to as%), particularly It is more preferable to add 0.1 to 1.0%. Also,
The pH of the first agent is 3.0 to 9.5, and more preferably 4.0 to 9.0. If the content of (a) is less than 0.05%, the durability of the conditioning effect is significantly reduced, which is not preferable.

When (a) exceeds 1.50%, it depends on the reducing agent, but when thioglycolic acid and its salts are used in a high pH range, the hair is damaged (reduced elasticity, outflow of protein in hair, etc.). ) Occurs, which is not preferable. If the pH of the first agent is less than 3.0, p
In the H region, it is not preferable because there is no reducing agent having a necessary (effective) reducing ability for the product of the present invention and capable of being stably formulated.

When the pH of the first agent exceeds 9.5, the reactivity of the reducing agent increases, the hair is damaged, and the swelling of the hair by alkali promotes the progress of the damage. (B) Cationic polymer and amphoteric polymer 1. The (b) cationic polymer used in the first agent of the two-component hair treatment composition of the present invention includes primary, secondary, tertiary and quaternary amines, and these amines are the same as those of the polymer. It may be directly contained in the chain or branched chain, or may be present as a substituent thereof. The molecular weight of the cationic polymer is preferably in the range of about 5 to 2,000,000, and specific examples of such a cationic polymer include polymers known per se.

For example, in addition to typical polyalkylene polyamines, polypeptides containing basic amino acids and the like (amino acid polymers or polyaminoamides), JP-A-56
-92812, water-soluble cationic polymers, JP-A-64-75411, JP-A-58-1
The cationic polymers and the like which have been already provided in the following (1) to (13) described in Japanese Patent Publication No. 50506 and Japanese Patent Publication No. 2-4446 are listed. (1) Vinylpyrrolidone / alkylamino acrylate or / and alkyl acrylate copolymer. (2) Cationic cellulose derivative, cellulose ether fourth derivative. (3) Cationic polysaccharide. (4) Piperazine-based polymer. (5) A polyamide obtained by polycondensation of an acid compound and a polyamine. (6) A water-soluble crosslinked polyamide obtained by crosslinking the above polyamide with a crosslinking agent. (7) Polycondensation products of polyalkylene polyamines and polycarboxylic acids, and derivatives thereof. (8) A polymer obtained by reacting polyalkylene polyamine with diglycolic acid and dicarboxylic acid and further with epichlorohydrin. (9) A polymer having a heterocycle in its main chain. (10) A polymer containing a quaternary ammonium salt in its main chain. (11) A polymer in which a tertiary or quaternary aminoalkyl ester or / and amide bond is bound to a copolymer derived from acrylic acid and methacrylic acid. (12) A quaternary polymer of vinylpyrrolidone and vinylimidazole. (13) Cationic derivatives of starch or starch ether.

2. The amphoteric polymer used in the first agent of the present invention is one containing both basic nitrogen and an acidic group, and one containing betaine as a constituent unit, and these functional group moieties are linear or branched chains of the polymer. May be directly included in the chain, or may be present as a substituent of these chains. Further, the basic nitrogen and the acidic group may not be equal in proportion, but since the amphoteric polymer is used together with the cationic polymer or alone, the basic nitrogen which is an adsorbing group to hair is rich. It is preferable. The amphoteric polymer preferably has a molecular weight in the range of about 5 to 2,000,000.

As the basic nitrogen, there are primary to fourth groups.
It contains a primary amine group, as the acidic group, a carboxyl group, a sulfone group, or a phosphoryl group containing, as betaine carboxybetaine, amidobetaine, sulfobetaine, phosphobetaine, hydroxysulfobetaine or amide. Specific examples include sulfobetaine.

Specific examples of such an amphoteric polymer include polymers known per se, and include general acryl amphoteric polymers, amino acid polymers, and the like, for example, Japanese Patent Publication No. 3-14805. The amphoteric polymers which have already been provided, such as those described in (1) to (8) below, may also be mentioned. (1) Copolymers of carboxyl group-containing acrylic monomers, acrylic dialkylaminoalkyl ester monomers, acrylic amide monomers and the like. (2) A copolymer of an alkyl group-substituted acrylic amide, an acidic comonomer, and an acrylic primary to quaternary ester. (3) A polymer of a polycarboxylic acid monomer and a basic monomer. (4) An acrylic polymer containing a carboxybetaine structure. (5) A polymer obtained from chitosan. (6) A polymer in which a dialkylaminoalkylamide is bound to an ethylene-maleic acid copolymer. (7) Piperazine-based polymer. (8) A polymer obtained by reacting a basic monomer with monochloroacetic acid or a salt thereof.

The above-mentioned (b) cationic polymer or amphoteric polymer can be used in combination or alone, and is used in the first agent in an amount of 0.1 to 25.0%, particularly 1.0 to 15.0%.
It is preferable to mix them. If it is less than 0.1%, it is not preferable because a complex sufficient for imparting smoothness, softness and moisturizing feeling to the hair is not formed on the hair.

If it exceeds 25.0%, it is not preferable because the softness and suppleness of the hair are lost due to excessive adsorption of the cationic or amphoteric polymer. (C) Anionic silicone polymer and amphoteric silicone
Polymers Examples of the (c) anionic silicone polymer or amphoteric silicone polymer used in the second agent of the two-part hair treatment composition of the present invention include the following.

The anionic silicone polymer is represented by the general formula:

[0023]

Embedded image Here, m is an integer of 1 to 2500 and n is 0 to 2500.
(Note that the order of the groups of m and n may be before or after each other). Also, y _i , y _j , y _k , y _l
Are the same or different and are selected from the group of substituents containing a lower alkyl group (such as a methyl group), an alkenyl group, an aryl group, a hydroxyl group, a hydroxylalkyl group, or an anionic group. The one having at least one anion group therein. That is, the introduction position of the anionic modifying group may be side chain type, both terminal type, one terminal type, both side chain both terminal type, etc. in the polymer according to the above-mentioned chemical formula 1.

Further, high molecular silicone (m + n is 300
0 to 10000), in which case they can be dissolved in low molecular weight silicones or hydrocarbons or used as emulsions with cationic surfactants. The substituent y containing an anionic group is, in particular, —R—
COOH, -R-SH, -R- SO 3 X, -R-S 2 O
₃ are those selected from the group consisting of X, -R- is a straight-chain or branched-chain may be an alkyl group having, also, it may have an ether bond in the chain of R, further, R A hydroxyl group may be present in. Also, -COOH,
─SH, -R-SO ₃ X or -S ₂ O ₃ X, etc., need not be at the end of the R, if the intermediate or R are branched may be present in the branched chain. Also, X is
H, alkali metal, alkaline earth metal, ammonia, amine, quaternary ammonium salt and the like.

Specific examples of the substituent y containing an anionic group include y = C ₂ H ₄ COOH y = C ₃ H ₆ COOH y = C ₃ H ₆ OCH ₂ CH (OH) CH ₂ S ₂ O ₃ X y = C ₃ H ₆ SH y = C ₃ H ₆ SO ₃ X y = C ₃ H ₆ OCH ₂ CH (OH) CH ₂ SO ₃ X and the like.

Examples of such anionic silicone polymers are trade names X-22-162A and X-22-370.
Carboxy-modified silicone polymer such as 1E (manufactured by Shin-Etsu Silicon Co., Ltd.), X-22-167B, X-22-980.
(Manufactured by Shin-Etsu Silicon Co., Ltd.) or ABIL: S201, AB
Examples thereof include Bunte-modified silicone polymers such as IL: S255 (ABIL, manufactured by SILICONE).

Next, the amphoteric silicone polymer is represented by the following chemical formula 2.
Is represented by the general formula

[0028]

Embedded image Here, M is an integer of 1 to 2500, and N is 0 to 2500.
(Note that the order of the M and N groups may be before or after each other). Y _i , Y _j , Y _k , and Y _l are
They may be the same or different and are selected from the group of substituents containing a lower alkyl group (such as a methyl group), an alkenyl group, an aryl group, a hydroxyl group, a hydroxylalkyl group and an amphoteric modifying group, and at least one or more are contained in the entire polymer. It has an ampholytic modifying group. That is, the introduction position of the amphoteric modifying group may be a side chain type, a both terminal type, a one terminal type, a side chain both terminal type, etc. in the polymer according to the above Chemical Formula 2. The amphoteric silicone polymer may have a group such as —COOH, —SH, —SO ₃ X or —S ₂ O ₃ X contained in the anionic polymer in the polymer.

The amphoteric modifying group is particularly preferably a betaine structure, and the betaine structure includes carbobetaine,
Phosphobetaine, sulfobetaine (taurobetaine)
Can be mentioned. Further, the substituent Y containing a betaine structure may be linear or may have a branched chain, and may have an ether bond in the chain,
Further, a hydroxyl group or a hydroxyalkyl group may be present.

Specific examples of the substituent Y containing an amphoteric modifying group include Y = C ₃ H ₆ OCH ₂ CH (OH) CH ₂ N ⁺ (C
^{_{H 3) 2 COO - Y =}} C 3 H 6 N + H 2 CH 2 CH (OH) CH 2 O-P
(= O) (O ⁻ ) —O—C ₁₂ H _{25 and the} like.

Amphoteric silicone polymer is the trade name ABI
Carbobetaine such as L-B9950, Japanese Patent Application No. 3-278
Examples include phosphobetaine and the like shown in JP-A-51. The above-mentioned (c) anionic silicone polymer or amphoteric silicone polymer can be used together or alone, and is compounded in the second agent in an amount of 0.1 to 25.0%, particularly 0.5 to 15.0%. It is preferable.

If it is less than 0.1%, it is not preferable because sufficient silicone polymer for imparting smoothness, softness and moistness to the hair is not fixed. When it exceeds 25.0%, it is not preferable because a proper feel cannot be given to the hair due to excessive adsorption of the silicone polymer. In addition, the two-component hair treatment composition of the present invention contains various medicinal agents, chelating agents, pearling agents, fragrances, dyes, ultraviolet absorbers, triclosan, trichlorocarban, etc. to the extent that the object of the present invention is not impaired. Fungicides, potassium glycyrrhizinate, anti-inflammatory agents such as tocopherol acetate, zinc pyridione, antidandruff agents such as piroctone auramine, preservatives such as methylparaben, pentylparaben, and solubilizing these compositions. What is usually used in cosmetics, such as the intended surfactant and solvent, may be appropriately blended.

When applying the two-component hair treatment composition of the present invention to hair, it may be carried out at room temperature, but in order to further enhance its effect, the two-component hair treatment composition of the present invention is used. After applying the first part of the above to the hair, 5 to 3 at 40 to 80 ° C
It is preferable to heat for 0 minutes. By treating the hair with the two-component hair treatment composition configured as described above, the silicone polymer semi-permanently adheres to the hair according to the following mechanism of action. That is, a large amount of a cationic or amphoteric polymer is fixed on the hair by treating the hair with the first agent, and the anionic silicone polymer or amphoteric silicone polymer in the second agent to be treated next becomes a cationic or amphoteric polymer. A strong silicone polymer sticks to the hair because it electrically bonds to form a complex. Therefore, a feeling such as smoothness, softness, and moistness can be imparted, and these effects last semipermanently.

[0034]

The present invention will be described below with reference to examples, but the present invention is not limited to these examples. A hair treatment composition having the composition shown in Table 1 below (Product 1 of the present invention)
及 beauty comparative 1-4) were adjusted respectively. The effect of applying each of these hair treatment compositions to hair was evaluated by the following evaluation methods. The results are shown in Table 2 below.

(Evaluation method) (1) 0.7 hair bundles of shampooed Japanese ordinary hair
50 ° C. after application of the first agent of the present invention product 1 at a bath ratio (hair weight: agent weight) of 1: 1 to g (15 cm in length).
After 10 minutes of heating, the second agent was applied at a bath ratio of 1: 1 and left at room temperature for 5 minutes, then rinsed with running water and dried. Comparative products 2 to 4 were applied at a bath ratio of 1: 1 and then left at room temperature for 5 minutes, rinsed with running water and dried. This is the hair immediately after treatment. Furthermore, this hair is shampooed and dried 10 times under normal conditions, and this is shampoo 1
Hair after 0 times. Freshly treated hair and shampoo 10
The amount of anionic silicone polymer or amphoteric silicone polymer adsorbed on the hair surface after turning was measured as follows.

Measurement method: Silicon polymer fixed on the hair was measured by FT-IR (ATR method), 800 and 1260c corresponding to the silicon-methyl group bending motion mode.
The change in the intensity of the absorption peak at m ⁻¹ was evaluated, and it was determined as the initial adsorption amount and the residual amount of the silicone polymer due to shampoo treatment. When carrying out the ATR method, amide 1 and amide 2 derived from hair were used as reference peaks to compare changes in strength.

[0037] (1) For the hair after the present invention product 1及 beauty comparative 1-4 treatment immediately following hair shampoo 10 times was evaluated as follows. Hair flexibility ◎: Remarkably softer than control hair. ◯: considerably softer than control hair. Δ: Slightly softer than control hair. X: Equivalent to control hair. Moisture feeling of hair ◎: Remarkably moisturized as compared with control hair. ○: Compared to the control hair, it is considerably moist. Δ: Slightly moist compared with control hair. X: Equivalent to control hair. Smoothness of hair ◎: Remarkably smoother than control hair. ◯: It is considerably smoother than the control hair. Δ: Slightly smoother than control hair. X: Equivalent to control hair.

[0038]

[Table 1] * 1 Polychlorinated dimethyl ethylene piperidinium (ADEKA CATIOACE / Asahi Denka Kogyo). * 2 N-methacryloylethyl-N, N-dimethylammonium / α-methylcarboxybetaine copolymer (Prasai L-401 / Kyoto Chemical Co., Ltd.). * 3 Carboxyl-modified silicone polymer (X
-22-3701E / Shin-Etsu Silicone). * 4 (meta)
Acrylic acid / (meth) acrylic acid ester copolymer (Plasai L-53P / Cyodo Chemical Co., Ltd.).

[0039]

[Table 2] The formulation of this example is shown below. The present embodiment is not limited to these formulations. [Example of formulation of first agent] -Part 1 (high-viscosity transparent gel system) -N-acetyl-L-cysteine 0.5 wt% poly (dimethyl chloride) piperidinium chloride * 1 5.0 wt% propylene glycol 3.0 wt% polyoxyethylene Lauryl ether (23EO) 3.0wt% Stearyltrimethylammonium chloride (28%) 1.0wt% Hydroxyethyl cellulose (Daicel SE850) 1.5wt% Methyl paraoxybenzoate 0.5wt% Sodium hydroxide Adjust to pH 7 Fragrance 0 1 wt% Dye Trace amount Purified water Balance ────────────────────────────────── (pH 7.0) 100.0wt % -Part 2 (high-viscosity transparent gel system) -N-acetyl-L-cysteine 0.5 wt% Plasize L-401 * 25 0 wt% Propylene glycol 3.0 wt% Polyoxyethylene lauryl ether (23 EO) 3.0 wt% Stearyl trimethyl ammonium chloride (28%) 1.0 wt% Hydroxyethyl cellulose (Daicel SE850) 1.5 wt% Methyl paraoxybenzoate 0 .5 wt% sodium hydroxide Adjusted to pH 7 Perfume 0.1 wt% Dye Trace amount Purified water Balance ───────────────────────────────── ─── (pH 7.0) 100.0 wt% -Part 3-Sodium bisulfite 0.5 wt% Polychlorinated dimethyl ethylene piperidinium 5.0 wt% Lactic acid 2.0 wt% Propylene glycol 3.0 wt% Polyoxyethylene lauryl ether ( 23EO) 3.0 wt% stearyl trimethyl chloride Ammonium (28%) 1.0 wt% Methyl paraoxybenzoate 0.5 wt% Hydroxyethyl cellulose (Daicel SE850) 1.5 wt% Sodium citrate Adjust to pH 4 Perfume 0.1 wt% Dye Trace amount Purified water balance ─────── ─────────────────────────── (pH4.0) 100.0wt% * 1 Asahi Denka Co., Ltd. (Adeka Catioace PD- 50) * 2 N-methacryloylethyl-N, N-dimethylammonium-α-methylcarboxybetaine polymer (manufactured by Kyowa Kagaku Co., Ltd.) [Formulation example of second agent] -No. 1 (anion emulsion system) -carboxyl-modified silicone ( X-22-3710) * 3 1.5 wt% cetanol 6.0 wt% propylene glycol 5.0 wt% N-lauroyl-L-glutami Sodium acid salt 3.0 wt% α-monoisostearyl glyceryl ether 1.5 wt% sodium dl-pyrrolidone carboxylate (50%) 0.5 wt% Hydroxyethyl cellulose (Daicel SE850) 0.1 wt% Methyl paraoxybenzoate 0.5 wt% Perfume 0.1 wt% Dye Trace amount Purified water balance ────────────────────────────────── 100.0wt% -Part 2 (Zwitterion emulsification system) -Carbobetaine modified silicone (B9950) * 4 1.5 wt% Cetanol 6.0 wt% Propylene glycol 5.0 wt% Lauryl dimethylaminoacetate betaine 3.5 wt% α-monoisostearyl glyceryl ether 1.5 wt % Dl-pyrrolidonecarboxylate sodium (50%) 0.5 wt Hydroxyethyl cellulose (Daicel SE850) 0.1 wt% Methyl paraoxybenzoate 0.5 wt% Perfume 0.1 wt% Dye Trace amount Purified water balance ─────────────────────── ───────────── 100.0wt% -Part 3 (Zwitterionic emulsification system) -Carboxyl-modified silicone (X-22-3710) 1.5wt% Polyether-modified silicone ( KF-353) * 5 0.5 wt% cetanol 6.0 wt% propylene glycol 5.0 wt% polyoxyethylene lauryl ether POE (9) 4.5 wt% α-monoisostearyl glyceryl ether 1.5 wt% dl-pyrrolidone carboxylic acid Sodium (50%) 0.5 wt% Hydroxyethyl cellulose (Daicel SE850) 0.1 wt % Methyl paraoxybenzoate 0.5wt% Perfume 0.1wt% Dye Trace amount Purified water Balance ───────────────────────────────── ──── 100.0wt% * 3 Shin-Etsu Silicone Co., Ltd. (X-22-3710) * 4 ABIL SILICONES (ABIL B9950) * 5 Shin-Etsu Silicone Co., Ltd. (KF-353)

[0040]

The two-component hair treatment composition of the present invention comprises:
The hair can be sufficiently imparted with flexibility, moistness and smoothness, and the conditioning effect can be maintained semipermanently.

Claims (2)

(57) [Claims] 1. A first agent containing (a) a reducing substance and (b) a cationic polymer or an amphoteric polymer, and (c) a second agent containing an anionic silicone polymer or an amphoteric silicone polymer. A two-part hair treatment composition, which is applied to the hair in the order of one agent and a second agent. 2. The hair is treated with a first agent and left for a certain period of time, and then intermediate rinsing is performed, or the second agent is applied to the hair without intermediate rinsing, and the hair is left for a certain period of time again and finally rinsed. The method for treating hair with the two-component hair treatment composition according to claim 1, wherein