JP7282361B2 - hair treatment agent - Google Patents

Description

The present invention relates to hair treatment agents.

With the diversification of hairstyles, there are more opportunities for hair to be chemically treated with hair coloring agents, bleaching agents, permanent wave agents, hair straightening agents, etc., making it more susceptible to damage (hair damage). be. In recent years, hair damage due to the use of hair coloring agents and bleaching agents containing high concentrations of alkaline agents and oxidizing agents has become more serious, and consumer needs for improvement of such hair damage are increasing.

For the purpose of alleviating hair damage caused by chemical treatments as described above and repairing hair after chemical treatments, in addition to conventional hair treatment treatments, chemical pretreatment agents, intermediate treatment agents, Alternatively, a technique has been proposed in which a hair treatment agent is used in combination as a post-treatment agent. Such techniques include, for example, a hair dyeing pre- and post-treatment agent using a lactone derivative (Patent Document 1), and a pre-intermediate post-treatment agent using an active oxygen radical scavenger and a reducing sugar (Patent Document 2).

In addition, countermeasures against hair damage caused by hair coloring and bleaching at beauty salons have been featured in beauty magazines, and have been introduced to beauticians working at beauty salons. Patent document 1).

In general, pretreatment agents include those of a type that prevent uneven dyeing of hair color and unevenness of perming, and those of a type that suppress further damage to damaged portions of hair. Post-treatment agents include those of the type that condition the hair.

Of these, the pretreatment agent for suppressing unevenness can eliminate unevenness, but cannot suppress hair damage due to hair coloring or permanent wave treatment. On the other hand, a pretreatment agent that suppresses hair damage can suppress hair damage, but on the other hand, dyeing and perming are poor. In addition, post-treatment agents for conditioning the hair have a problem in that although the finished condition is good, hair damage cannot be suppressed.

Recently, hair coloring agents using dicarboxylic acids and hair treatment agents for permanent wave treatment have been put on the market (Non-Patent Document 2). However, when using the above-mentioned hair treatment agent, there are problems such as a complicated application process and a long application time. In beauty salons, there is a demand for a short-time treatment due to the need to perform the treatment within a limited time, and there is a demand for a hair treatment agent that can be easily applied without requiring complicated steps.

JP 2015-140326 A JP 2008-74727 A

Management and Science, published by Shinbei Publishing, July 2018, p. 10-45 Management and Science, published by Shinbei Publishing, August 2018, p. 50-53

The present invention has been made in view of the above circumstances, and its object is to suppress hair damage while maintaining the performance of hair coloring agents, bleaching agents, permanent wave agents, hair straightening agents, etc. To provide a hair treatment agent which can be easily applied without requiring complicated steps.

The hair treatment agent of the present invention that has solved the above problems is as follows.
[1] A hair treatment agent comprising (A) hydroxypropylgluconamide and (B) an anionic polymer.
[2] The hair treatment agent according to [1] above, wherein the mass ratio of (A) and (B) is 1:1 to 1:10.
[3] The blending amount of (A) is 10% by mass or less (not including 0% by mass) relative to the entire hair treatment agent, and the blending amount of (B) is 30% by mass relative to the entire hair treatment agent. % or less (not including 0% by mass), the hair treatment agent according to the above [1] or [2].
[4] The hair according to any one of [1] to [3] above, wherein (B) is one or more compounds selected from the group consisting of maleic acid-based copolymers and acrylic acid-based copolymers. Processing agent.
[5] The hair treatment agent according to [4] above, wherein (B) is a (methyl vinyl ether/maleic acid) copolymer.
[6] The hair treatment agent according to any one of [1] to [5] above, which further contains (C) polyquaternium-61.
[7] The hair treatment agent according to [6] above, wherein the content of (C) is 0.20% by mass or less (not including 0% by mass) relative to the entire hair treatment agent.
[8] The hair treatment agent according to any one of the above [1] to [7], which is used before or at the same time as treatment.

INDUSTRIAL APPLICABILITY According to the present invention, it is possible to suppress hair damage while maintaining the performance of hair coloring agents, bleaching agents, permanent waving agents, curly hair straightening agents, etc., and can be easily applied without requiring complicated processes. It was possible to provide a hair treatment agent that can

The hair treatment agent of the present invention is characterized by containing (A) hydroxypropylgluconamide and (B) an anionic polymer. According to the study results of the present inventors, the desired purpose can be achieved only by adding both the above (A) and the above (B), and even if only one of them is added, or the above (B) It was found that the intended purpose could not be achieved even if a component other than (A) was blended (see the section of Examples described later).

As used herein, the term "hair treatment agent" refers to an agent used in hair treatment, such as hair coloring agents, bleaching agents, permanent wave agents, pretreatment agents used in hair straightening agents, and intermediate treatments. agents, post-treatment agents, and the like.

In this specification, the hydroxypropyl gluconamide may be referred to as the (A) component, and the anionic polymer may be referred to as the (B) component. A detailed description will be given below.

(1) Component (A): hydroxypropyl gluconamide The above component (A) is obtained by the reaction of gluconolactone and 3-aminopropanol, and hydroxypropylammonium gluconate as a reaction by-product of the above reaction. may be generated. The above component (A) binds to keratin, which is the main component of hair, and has the effect of reinforcing hair, for example, contributing to the improvement of elasticity of hair after bleaching. It is presumed that the above component (A) acts as an active ingredient in the present invention. A commercially available product may be used as the component (A).

The blending amount of component (A) is preferably 10% by mass or less with respect to the entire hair treatment agent. If the content of the component (A) exceeds 10% by mass, the above effects become saturated, and further improvement of the effects cannot be expected. The content of component (A) is more preferably 9% by mass or less, and even more preferably 8% by mass or less. In order to effectively exhibit the above effects, the blending amount of component (A) in the entire hair treatment agent is preferably 0.1% by mass or more, more preferably 1% by mass or more, and 2% by mass or more. More preferably, 3% by mass or more is even more preferable.

(2) Component (B): Anionic Polymer The anionic polymer used as the component (B) has the effect of adhering to the surface of the hair and imparting finger combability (slipperiness). According to the results of studies by the present inventors, by blending this component (B) with the aforementioned component (A), the performance of the hair treatment agent (for example, the smoothness and elasticity of the hair during rinsing, and the feel of the finished hair) can be improved. It was found that even if components other than the component (B), such as those listed in Table 1 below, were added, the overall performance was reduced (see the Examples section below). reference).

The type of the anionic polymer used in the present invention is not particularly limited, but at least one compound selected from the group consisting of maleic acid-based copolymers and acrylic acid-based copolymers, carboxyvinyl polymer, xanthan gum, Examples include sodium polyacrylate and sodium alginate. These may be used alone or in combination of two or more.

Specific examples of the maleic acid-based copolymer include (methyl vinyl ether/maleic acid) copolymer, (vinyl methyl ether/ethyl maleate) copolymer, (vinyl methyl ether/butyl maleate) copolymer, (Raness-40 sodium maleate /styrene sulfonic acid) copolymer, (methoxy PEG-16 Na maleate/styrene sulfonic acid) copolymer, and the like.

Specific examples of the above acrylic copolymer include alkyl acrylate copolymer Na and alkyl acrylate copolymer ammonium.

In the present invention, one or more compounds selected from the group consisting of maleic acid-based copolymers and acrylic acid-based copolymers are preferably used, maleic acid-based copolymers are more preferably used, (methyl vinyl ether/ Maleic acid) copolymers are more preferably used. Since the (methyl vinyl ether/maleic acid) copolymer is a polymer in which two carboxyl groups are linked, it easily binds to the hair and is compatible with the cationic component of the treatment, so the desired effect is remarkable. demonstrated.

The amount of component (B) blended with respect to the entire hair treatment agent (when it is contained alone, it is the amount alone, and when it is used in combination of two or more, it is the total amount thereof) is 30% by mass or less. preferable. If the amount of the component (B) exceeds 30% by mass, the component (B) is excessively adsorbed on the hair, resulting in a heavy texture, stickiness, etc., and a decrease in touch and slipperiness. The content of component (B) is more preferably 25% by mass or less, and even more preferably 22% by mass or less. Further, in order to effectively exhibit the above effects, the blending amount of the component (B) in the entire hair treatment agent is preferably 0.1% by mass or more, more preferably 0.5% by mass or more, and 1% by mass. The above is more preferable.

The weight ratio of the component (A) to the component (B) is preferably 1:1 to 1:10. If the mass ratio of component (B) to component (A) is less than 1, the texture will be light, and the texture and slipperiness of the hair will be weak. On the other hand, when the mass ratio of component (B) to component (A) exceeds 10, the texture becomes heavy, and the texture and slippage of the hair become poor. The mass ratio of component (A) to component (B) is more preferably 1:2 to 1:9, still more preferably 1:3 to 1:8.

The hair treatment agent of the present invention contains the components (A) and (B) as essential components, and the pH of the hair treatment agent is preferably controlled to 5 or less. If the pH exceeds 5, there is a possibility that the above effects may not be exhibited effectively. A more preferred pH is 2-4.

In order to control the pH within the above range, a pH adjuster may be added. The type of pH adjuster is not particularly limited, and examples thereof include lactic acid, citric acid, levulinic acid, malic acid, succinic acid, and glutamic acid. Lactic acid, succinic acid, and malic acid are preferred, and lactic acid is more preferred, in order to effectively maintain the properties of the hair treatment agent (eg, smoothness and elasticity of hair during rinsing and touch feeling upon finishing).

(3) (C) Component: Polyquaternium-61
The hair treatment agent of the present invention preferably further contains component (C) (polyquaternium-61). Polyquaternium-61 is a phospholipid polymer, also known as 2-methacryloyloxyethylphosphorylcholine/stearyl methacrylate copolymer, and is particularly excellent in improving slipperiness during rinsing and improving touch feeling in finishing.
In this specification, Polyquaternium-61 may be referred to as the (C) component.

The blending amount of the component (C) with respect to the entire hair treatment agent is preferably 0.20% by mass or less. If the content of component (C) is more than 0.20% by mass, the texture becomes too heavy, stickiness occurs, and touch and slippage are reduced. The blending amount of the component (C) is more preferably 0.18% by mass or less, still more preferably 0.15% by mass or less. Further, in order to effectively exhibit the above effects, the blending amount of the above component (C) with respect to the entire hair treatment agent is preferably 0.01% by mass or more, more preferably 0.02% by mass or more, and more preferably 0.03% by mass. % or more by mass is more preferable.

As described above, the hair treatment agent of the present invention contains both the components (A) and (B), preferably further contains the component (C), and optionally contains a pH adjuster. Furthermore, the hair treatment agent of the present invention contains components commonly used in hair treatment agents (e.g., solid oils, surfactants, silicones, liquid oils, wetting agents, UV absorbers, antioxidants, chelating agents, preservatives, pigments, fragrances, etc.) may be contained.

According to the hair treatment agent of the present invention, hair damage can be suppressed while maintaining the performance of a hair coloring agent, bleaching agent, permanent waving agent, hair straightening agent, and the like.

Here, "hair damage can be suppressed" means that these performances are exhibited when the slipperiness and elasticity of the hair during rinsing and the feel of the finish are evaluated, for example, by the method described in the Examples section below. means that

In addition, "performance is maintained" means, for example, the brightness of hair after bleaching (bleaching power, ΔL ^* value) and the color of hair after hair coloring by the method described in the Examples section below. (Dyeability, ΔE ^* value), elongation of curly hair after straightening treatment, and hand feel were evaluated, and these performances were well maintained without deterioration.

Since the hair treatment agent of the present invention has the above effects, it can be easily applied without requiring complicated steps. That is, as a hair treatment method, a two-agent treatment method is generally used in which pre-treatment (first agent) and post-treatment (second agent) are performed before and after treatment such as bleaching, but according to the present invention, post-treatment The above effects can also be obtained by omitting (second agent) and using the hair treatment agent of the present invention before or simultaneously with the treatment. This is extremely useful in that the treatment time can be shortened and the process can be simplified. Of course, the hair treatment agent of the present invention is not limited to the above embodiment, and may be applied to a two-agent treatment method.

Hereinafter, the present invention will be described in more detail with reference to examples, but the present invention is not limited by the following examples, and can be implemented with modifications within the scope that can conform to the gist of the above and later descriptions. are also possible, and all of them are included in the technical scope of the present invention. In the following description, "parts" means "parts by mass" and "%" means "% by mass" unless otherwise specified.

1. Test method 1
Bleached hair was prepared as follows, and evaluation items 1 to 5 below were evaluated.
・Evaluation item 1: Hair slippage during rinsing after bleaching when a hair treatment agent is used at the same time as a bleaching agent ・Evaluation item 2: Bleaching treatment when a hair treatment agent is used at the same time as a bleaching treatment agent Elasticity of hair after rinsing ・Evaluation item 3: Finished touch when hair treatment agent is used at the same time as bleach treatment agent ・Evaluation item 4: When hair treatment agent is used at the same time as bleach treatment agent, Brightness of hair after bleaching (bleach strength)
・Evaluation item 5: Color (dyeability) of hair after hair coloring treatment when a hair treatment agent is used at the same time as a hair coloring agent

1-1. Preparation of Bleached Hair Hair that had not undergone any chemical treatment such as hair coloring, bleaching, or permanent wave treatment was subjected to the following bleaching treatment.

Specifically, Caradeco Toner Bleach Powder EX (powder bleaching agent: manufactured by Nakano Pharmaceutical Co., Ltd.) and Caradeco Oxide N06 (hydrogen peroxide-based oxidizing agent: manufactured by Nakano Pharmaceutical Co., Ltd.) were adjusted to a ratio of 1:3 (mass ratio). A mixed bleaching agent is prepared, applied to the hair at a mass ratio (bleaching agent: hair) of 1:1, left at 35 ° C. for 30 minutes, and then added with 40% by mass of triethanolamine lauryl sulfate. It was washed with water and then dried.
This series of bleaching treatments was performed once more (double bleaching treatment).

1-2. Evaluation item 1: Hair slippage during rinsing after bleaching For the hair bundle (20 cm, 10 g) subjected to double bleaching, 30 g of Caradeco Toner Bleach Powder EX and 90 g of Caradeco Oxide N06 were mixed into a bleaching agent. 2 g of various hair treatment agents (formulation examples 1 to 43) shown in Tables 1 to 7 were mixed and bleached, followed by rinsing. The slippage of the hair during rinsing after bleaching was sensory evaluated by 10 expert panelists based on the following 3-grade evaluation (evaluation points), and the total evaluation points were obtained and judged according to the following criteria.
3 points: Very good slip 2 points: Good slip 1 point: Poor slip [Evaluation criteria for hair slippage during rinsing after bleaching]
◎: 25 points or more ○: 20 points or more and less than 25 points △: 15 points or more and less than 20 points ×: less than 15 points

1-3. Evaluation item 2: Elasticity of hair when rinsing after bleaching For the double-bleached hair bundle (20 cm, 10 g), 30 g of Caradeco Toner Bleach Powder EX and 90 g of Caradeco Oxide N06 were added to the bleaching agent. 2 g of the hair treatment agents (formulation examples 1 to 43) shown in Tables 1 to 7 were mixed and bleached, followed by rinsing. Sensual evaluation was performed by 10 expert panelists on the elasticity of hair during rinsing after bleaching treatment based on the following three-grade evaluation (evaluation points), and the total evaluation points were obtained and judged according to the following criteria.
3 points: Very elastic 2 points: Elastic 1 point: No elasticity [Evaluation criteria for hair elasticity during rinsing after bleaching]
◎: 25 points or more ○: 20 points or more and less than 25 points △: 15 points or more and less than 20 points ×: less than 15 points

1-4. Evaluation item 3: Finished touch For the double bleached hair bundle (20 cm, 10 g), 30 g of caradeco toner bleach powder EX and 90 g of caradeco oxide N06 are mixed to the bleaching agent described in Tables 1 to 7. 2 g of the hair treatment agents (formulation examples 1 to 43) were mixed and bleached, followed by rinsing. The feel of the finished product was sensory evaluated by 10 expert panelists based on the following 3-grade evaluation (evaluation points), and the total evaluation points were obtained and judged according to the following criteria.
3 points: Very good touch 2 points: Good touch 1 point: Poor touch [Evaluation criteria for touch after bleaching]
◎: 25 points or more ○: 20 points or more and less than 25 points △: 15 points or more and less than 20 points ×: less than 15 points

1-5. Evaluation item 4: Brightness of hair after bleaching (bleaching power)
The bleaching agent obtained by mixing 30 g of caradeco toner bleach powder EX and 90 g of caradeco oxide N06 with the double bleached hair bundle (20 cm, 10 g) is mixed with the hair treatment agent described in Tables 5 and 7 (formulation example 28). , 40) was mixed and bleached, followed by rinsing.
For comparison, the above bleaching treatment was performed without using a hair treatment agent.
For each hair tress, the brightness (L ^* value) was measured using a photometer "Spectro Color Meter SE2000" manufactured by Nippon Denshoku Industries Co., Ltd., and the difference between them (ΔL ^* value) was obtained.
[Evaluation criteria for brightness of hair after bleaching (bleaching power)]
ΔL ^* value≦1: The bleaching power is not decreased even when the hair treatment agent is used. ΔL ^* value>1: The bleaching power is decreased when the hair treatment agent is used.

1-6. Evaluation item 5: Color (dyeability) of hair after hair coloring treatment
The hair treatment agents described in Tables 5 and 7 (formulation examples 28, 40) was mixed and subjected to hair color treatment.
For comparison, the above hair color treatment was performed without using a hair treatment agent.
For each hair bundle, the color difference (L ^* value, a ^* value, b ^* value) was measured using a photometer "Spectro Color Meter SE2000" manufactured by Nippon Denshoku Industries Co., Ltd., and the difference (ΔL ^* value , Δa ^* value, Δb ^* value) were determined, and the ΔE ^* value was calculated from these values by the following formula.
ΔE ^* value = √ ((ΔL ^* value) ² + (Δa ^* value) ² + (Δb ^* value) ² )
[Evaluation criteria for color (dyeability) of hair after color treatment]
ΔE ^* value ≤ 2: Dyeability is not reduced even with the use of a hair treatment agent ΔE ^* value > 2: Dyeability is reduced with the use of a hair treatment agent

2. Test method 2
Evaluation items 6 and 7 below were evaluated for the double-bleached hair prepared as described above.
・Evaluation item 6: Brightness of hair after bleaching when using hair treatment agent as pretreatment (bleaching strength)
・Evaluation item 7: Color (dyeability) of hair after hair coloring treatment when using a hair treatment agent as a pretreatment

2-1. Evaluation item 6: Brightness of hair after bleaching when a hair treatment agent was used as pretreatment (bleaching strength)
To the double-bleached hair tress (20 cm, 10 g), 1 g of the hair treatment agent (formulation examples 28 and 40) shown in Tables 5 and 7 diluted 11 times with water was applied. Thereafter, Caradeco Toner Bleach Powder EX and Caradeco Oxide N06 were mixed at a ratio of 1:3 (mass ratio) to perform bleaching.
For comparison, the above bleaching treatment was performed without using a hair treatment agent.
For each hair bundle, 1-5. Evaluation item 4: The lightness (L ^* value) was measured in the same manner as the lightness of hair after bleaching (bleaching power), and the difference between them (ΔL ^* value) was obtained and evaluated.

2-2. Evaluation item 7: Color (dyeability) of hair after hair coloring treatment when using a hair treatment agent as a pretreatment
To the double-bleached hair tress (20 cm, 10 g), 1 g of the hair treatment agent (formulation examples 28 and 40) shown in Tables 5 and 7 diluted 11 times with water was applied. Thereafter, Caradeco Muzeria A9m and Caradeco Oxide N 06 were mixed at a ratio of 1:1 (mass ratio) to carry out hair color treatment.
For comparison, the above hair color treatment was performed without using a hair treatment agent.
For each hair bundle, 1-6. Evaluation item 5: The ΔL ^* value, Δa ^* value, and Δb ^* value were obtained in the same manner as for the color (dyeability) of hair after hair coloring treatment, and the ΔE ^* value was calculated from these values for evaluation.

3. Test method 3
Bleached/curly straightened hair was prepared by bleaching and straightening in the following manner, and evaluation items 8 and 9 below were evaluated.
・Evaluation item 8: Elongation of curly hair after straightening treatment ・Evaluation item 9: Touch after straightening treatment

3-1. Preparation of Bleached/Curly Straightened Hair Hair that had not undergone any chemical treatment such as hair color treatment, bleaching treatment, or permanent wave treatment was sequentially subjected to the following bleaching treatment and curly hair straightening treatment.

First, Caradeco Toner Bleach Powder EX (powder bleaching agent: manufactured by Nakano Pharmaceutical Co., Ltd.) and Caradeco Oxide N06 (hydrogen peroxide-based oxidizing agent: manufactured by Nakano Pharmaceutical Co., Ltd.) were mixed at a ratio of 1:3 (mass ratio). A bleaching agent is prepared, applied to the hair at a mass ratio (bleaching agent: hair) of 1:1, left at 35 ° C. for 30 minutes, and then treated with a 40% by mass triethanolamine lauryl sulfate solution. Washed and then dried (bleaching).

Next, Mark Conti 50 1st liquid (manufactured by Nakano Pharmaceutical Co., Ltd.) was applied to the above hair at a mass ratio (1st liquid: hair) of 1:1, and left for 15 minutes at 30°C. , rinsed, dried, and then ironed. After that, Mark Conti 50 2nd liquid (manufactured by Nakano Pharmaceutical Co., Ltd.) was applied to the above hair at a mass ratio (2nd liquid: hair) of 1:1, left at 30 ° C. for 10 minutes, The hair was washed with a 40% by mass triethanolamine lauryl sulfate solution and then dried (curly hair straightening treatment).

3-2. Evaluation item 8: Elongation of curly hair after straightening treatment A hair treatment agent described in Table 7 (formulation example 40) was applied to a hair bundle (20 cm, 10 g) that had undergone bleaching and straightening treatment as described above. was diluted 21 times with water, and 1 g of the solution was applied. After that, Mark Conti 50 First Liquid was applied to the hair at a mass ratio of 1:1 (first liquid:hair), left at 30° C. for 15 minutes, and then rinsed. Furthermore, 1 g of a hair treatment agent (formulation example 40) shown in Table 7 diluted 21 times with water was applied, dried, and then ironed. After that, Mark Conti 50 2nd liquid was applied to the above hair at a mass ratio (2nd liquid: hair) of 1:1, left at 30 ° C. for 10 minutes, and then ENU Shampoo FL (Shampoo: Nakano Pharmaceutical) Ltd.), then treated with ENU Repairment FL (hair treatment: manufactured by Nakano Pharmaceutical Co., Ltd.) and dried.
For comparison, the above Mark Conti 50 treatment was performed without using a hair treatment agent.

Whether or not the hair treatment agent (Prescription Example 40) maintains the elongation of curly hair after straightening treatment was determined by comparison with the comparative example. Specifically, 10 expert panelists sensory evaluated the elongation of curls after curly hair straightening treatment based on the following three-level evaluation (evaluation points), and the total evaluation points were obtained, and the following criteria were used. Judged.
3 points: Curly hair is extremely stretched 2 points: Curly hair is stretched 1 point: Curly hair is not stretched [Evaluation criteria for curl growth after curly hair straightening treatment]
◎: 25 points or more ○: 20 points or more and less than 25 points △: 15 points or more and less than 20 points ×: less than 15 points

3-3. Evaluation item 9: Touch after straightening treatment Treatment was performed in the same manner as in 3-2 above, and whether or not the touch after straightening treatment was improved by the hair treatment agent (formulation example 40) was compared with a comparative example. and judged. Specifically, 10 expert panelists performed a sensory evaluation of the texture after the curly hair straightening treatment based on the following 3-grade evaluation (evaluation points), and the total evaluation points were obtained and judged according to the following criteria. .
3 points: Very good touch 2 points: Good touch 1 point: Poor touch [Evaluation criteria for touch after straightening treatment]
◎: 25 points or more ○: 20 points or more and less than 25 points △: 15 points or more and less than 20 points ×: less than 15 points

Example 1
In this example, the usefulness of adding component (B) was examined.
Specifically, various hair treatment agents (formulation examples 1 to 8) shown in Table 1 were prepared, and the evaluation item 1 (hair slippage during rinsing after bleaching) and evaluation item 2 (after bleaching) were used. Hair elasticity during rinsing) and evaluation item 3 (finished touch) were evaluated.
In addition, in this example and the examples described later, the raw material of FiberHance BM SOLUTION manufactured by Ashland Japan Co., Ltd. was used as the component (A). The raw material contains 32.5% hydroxypropylgluconamide and 17.5% hydroxypropylammonium gluconate. The compounding amount of component (A) shown in Tables 1 to 9 below is obtained by converting the amount of hydroxypropylgluconamide contained in the raw material.

These results are also shown in Table 1.

From Table 1, Formulation Examples 1 to 5 using the anionic polymer defined in the present invention as the component (B) were good in all evaluation items. In particular, Formulation Example 1 using a (methyl vinyl ether/maleic acid) copolymer as the component (B) was extremely good in all evaluation items.
On the other hand, in Formulation Examples 6 to 8, in which a component not specified in the present invention was used as the component (B), all the evaluation items were lowered.
From the above experimental results, it was found that the above properties can be effectively exhibited by using the components (A) and (B) in combination as specified in the present invention.

Example 2
In this example, a preferred blending amount of component (A) was examined.
Specifically, various hair treatment agents (prescription examples 9 to 14) shown in Table 2 were prepared, and the evaluation item 1 (hair slippage during rinsing after bleaching) and evaluation item 2 (after bleaching) were used. Hair elasticity during rinsing) and evaluation item 3 (finished touch) were evaluated.

These results are also shown in Table 2.

From Table 2, Formulation Examples 10 to 12, in which the amount of component (A) was blended within the preferred range, were good in all evaluation items.
On the other hand, in Formulation Example 9, which does not contain the component (A), the elasticity of the hair, especially during rinsing after bleaching treatment, was reduced.
Moreover, in Formulation Examples 13 and 14, in which the blending amount of component (A) exceeds the preferred upper limit (10%), the texture tends to be heavy and the slippage tends to be weak.

Example 3
In this example, a preferred blending amount of component (B) was investigated.
Specifically, various hair treatment agents (formulation examples 15 to 21) shown in Table 3 were prepared, and the evaluation item 1 (hair slippage during rinsing after bleaching) and evaluation item 2 (after bleaching) were used. Hair elasticity during rinsing) and evaluation item 3 (finished touch) were evaluated.

These results are also shown in Table 3.

From Table 3, Formulation Examples 16 to 20, in which the amount of component (B) was blended within the preferred range, were good in all evaluation items.
On the other hand, in Formulation Example 15, which does not contain the component (B), the hair slipperiness during rinsing after bleaching treatment and the touch feeling at the time of finishing were reduced.
In addition, in Formulation Example 21, in which the blending amount of component (B) exceeds the preferred upper limit (30%), the texture becomes too heavy and sticky, and there is a tendency for hair slippage during rinsing after bleaching treatment to particularly decrease. was taken.

Example 4
In this example, the preferred compounding ratio (mass ratio) of the components (A) and (B) was examined.
Specifically, various hair treatment agents (formulation examples 22 to 27) shown in Table 4 were prepared, and the evaluation item 1 (hair slippage during rinsing after bleaching) and evaluation item 2 (after bleaching) were used. Hair elasticity during rinsing) and evaluation item 3 (finished touch) were evaluated.

These results are also shown in Table 4.

From Table 4, Formulation Examples 23 to 26, in which the mixing ratio of component (A) and component (B) was blended within the preferred range, were good in all evaluation items.
On the other hand, in Formulation Example 22, where the blending ratio of components (A) and (B) is below the preferred lower limit (1:1), the elasticity of hair during rinsing after bleaching treatment is reduced, and rinsing after bleaching treatment is performed. There was also a tendency for the slippage of the hair to decrease.
In Formulation Example 27, in which the blending ratio of components (A) and (B) exceeds the preferred upper limit (1:10), the texture becomes heavy, and the touch of the finished hair and the hair during rinsing after bleaching are poor. A tendency for slippage to decrease was observed.

Example 5
In this example, a particularly preferred type of pH adjuster was investigated.
Specifically, various hair treatment agents (formulation examples 28 to 31, 18, 32) shown in Table 5 were prepared, and the evaluation items 1 (hair slippage during rinsing after bleaching) and evaluation items 2 described above were prepared. (Hair resilience during rinsing after bleaching) and evaluation item 3 (finished touch) were evaluated.

These results are also shown in Table 5.

From Table 5, as long as the pH is controlled within the preferred range of the present invention, good properties were obtained using any pH adjuster, but the most preferred properties were obtained with lactic acid. followed by succinic acid and malic acid. Lactic acid had good slipperiness from the time of rinsing, and the feel was maintained even at the time of finishing.

Example 6
In this example, the effect of adding other components including the preferably used component (C) (polyquaternium-61) was examined.
Specifically, various hair treatment agents (formulation examples 33 to 38) shown in Table 6 were prepared, and the evaluation item 1 (hair slippage during rinsing after bleaching) and evaluation item 2 (after bleaching) were used. Hair elasticity during rinsing) and evaluation item 3 (finished touch) were evaluated.

These results are also shown in Table 6.

From Table 6, Formulation Example 33 using polyquaternium-61 as the component (C) has all the properties of hair slippage during rinsing after bleaching, elasticity of hair during rinsing after bleaching, and touch when finished. The best results were obtained for the evaluation items. In particular, in Formulation Example 33, the smoothness during rinsing and the touch upon finishing were particularly improved as compared with Formulation Examples 34 to 38 using components other than polyquaternium-61.

Example 7
In this example, the preferred blending amount of component (C) (polyquaternium-61), which is preferably used, was investigated.
Specifically, various hair treatment agents (formulation examples 28, 33, 39 to 43) shown in Table 7 were prepared, and the evaluation items 1 (hair slippage during rinsing after bleaching) and evaluation items 2 described above were prepared. (Hair resilience during rinsing after bleaching) and evaluation item 3 (finished touch) were evaluated.

These results are also shown in Table 7.

From Table 7, in Formulation Examples 33 and 39 to 42, in which the amount of component (C) was blended within a preferable range, compared to Formulation Example 28 that did not contain component (C), especially during rinsing after bleaching treatment Hair glide and hair elasticity during rinsing after post-bleaching treatment were improved.
In addition, in Formulation Example 43, where the blending amount of component (C) exceeds the preferred upper limit (0.20%), the texture becomes too heavy and sticky. There was a tendency for slip to decrease.

Example 8
In Examples 1 to 7 described above and Example 9 described later, the properties when the hair treatment agent was used at the same time as the bleaching treatment were evaluated. Characteristics when used for pretreatment were evaluated.
Specifically, various hair treatment agents (formulation examples 28 and 40) shown in Table 8 were prepared and evaluated for the following items.
・Evaluation item 4: Brightness of hair after bleaching (bleaching power) when a hair treatment agent is used at the same time as a bleaching agent
・Evaluation item 5: Color (dyeability) of hair after hair coloring treatment when a hair treatment agent is used at the same time as a hair coloring agent
・Evaluation item 6 [Brightness of hair after bleaching (bleaching strength) when hair treatment agent is used as pretreatment]
・Evaluation item 7 [Color (dyeability) of hair after hair coloring treatment when hair treatment agent is used as pretreatment]
Formulation Examples 28 and 40 differ only in that component (C) is not blended (Formulation Example 28) or blended (Formulation Example 40).

These results are also shown in Table 8. In Table 8, "medicine mixture" indicates the results when the hair treatment agent was used at the same time as the bleach treatment agent, and "pretreatment" indicates the results when the hair treatment agent was used as a pretreatment.

First, from the results of the ΔL ^* value, regardless of the presence or absence of the component (C), the bleaching power did not decrease even after pretreatment and chemical mixing (the ΔL ^* value was significantly less than 1), and the brightness was visible even with the naked eye. It was found that no difference was found in
In addition, from the results of the ΔE ^* value, regardless of the blending of the component (C), the dyeability (color development) did not decrease even with pretreatment and chemical mixing (the ΔE ^* value was significantly below 2), and the color was visually observed. It was also found that no difference was found in

Example 9
In this example, properties were evaluated when the preferred component (C) (polyquaternium-61) was blended.
Specifically, the hair treatment agent shown in Table 9 (formulation example 40) was prepared, and the aforementioned evaluation item 8 (elongation of curly hair after straightening treatment) and evaluation item 9 (touch after straightening treatment) were used. evaluated.

These results are also shown in Table 9.

First, from the results of the ΔL ^* value, it was found that in the bleaching using the above prescription example 40, the bleaching force did not decrease (the ΔL ^* value was much less than 1), and no difference in brightness was observed visually. rice field.
In addition, from the results of the ΔE ^* value, the hair color using the above Formulation Example 40 did not deteriorate in dyeability (color development) (the ΔE ^* value was much lower than 2), and no difference in color was observed visually. I also found out not.
Furthermore, it was found that in the straightening of curly hair using Formulation Example 40, the elongation of curls did not decrease, and the touch was also good.

As described above, from the results of the above series of Examples, it can be seen that the use of the hair treatment agent of the present invention can suppress hair damage while maintaining the performance of hair coloring agents, bleaching agents, permanent waving agents, hair straightening agents, etc. It was confirmed that it is possible to provide a hair treatment agent that can be easily applied without requiring complicated steps.

Claims (5)

(A) 20.2% by mass or less (not including 0% by mass) of hydroxypropyl gluconamide based on the entire hair treatment agent, and (B) 35% by mass or less (0% by mass) of the entire hair treatment agent. containing a maleic acid-based copolymer of (not including) , the mass ratio of (A) and (B) is 1:0.6 to 1:17.5,
The maleic acid-based copolymers include (methyl vinyl ether/maleic acid) copolymer, (vinyl methyl ether/ethyl maleate) copolymer, (vinyl methyl ether/butyl maleate) copolymer, (Raness-40 sodium maleate/styrene sulfone acid) copolymer, and (methoxy PEG-16 sodium maleate/styrenesulfonic acid) copolymer . 2. The hair treatment agent according to claim 1 , wherein said (B) is a (methyl vinyl ether/maleic acid) copolymer. 3. The hair treatment agent according to claim 1, further comprising (C) polyquaternium-61. 4. The hair treatment agent according to claim 3 , wherein the content of (C) is 0.20% by mass or less (not including 0% by mass) relative to the entire hair treatment agent. 5. The hair treatment agent according to any one of claims 1 to 4 , which is used before treatment or simultaneously with treatment.