JP2022179249A - Hair washer - Google Patents

Abstract

To provide a hair washer that has an effect of protecting the dyed hair from color-fading during its washing.SOLUTION: A hair washer contains component A: zinc glycinate, component B: tannic acid and component C: ampholytic surfactant.SELECTED DRAWING: None

Description

The present invention relates to hair cleansing agents.

Dyeing your hair can lighten it and make it look younger. As a treatment agent for dyeing hair, an oxidative hair dye comprising a first agent containing an oxidation dye and an alkali agent and a second agent containing hydrogen peroxide is widely used. However, although these oxidative hair dyes exhibit an excellent hair dyeing effect, they have drawbacks such as great damage to the hair and a tendency to irritate the scalp.

Therefore, in recent years, hair color treatments, hair manicures, etc. that contain direct dyes such as acid dyes, basic dyes, HC dyes, and nitro dyes have attracted attention as hair dyes that do little damage to the hair and do not cause scalp irritation. bathed in However, these hair dyes have the problem that direct dyes such as acid dyes, basic dyes, HC dyes, and nitro dyes are removed from the hair by daily shampooing, etc., and fading is significantly accelerated compared to oxidative hair dyes. was there.

In view of such circumstances, attempts have been made to suppress the fading of dyes. Specifically, a hair cosmetic for suppressing fading containing polyphenols has been proposed (Patent Document 1). However, the hair cosmetic containing the above polyphenols is a treatment agent after hair washing, and is not mainly intended for preventing color fading due to hair washing.

On the other hand, a hair cleanser containing zinc salts and/or zinc complexes of amino acids has also been proposed (Patent Document 2). However, even hair cleansing agents containing these components are not satisfactory because they do not sufficiently suppress discoloration caused by hair cleansing.

JP-A-8-291027 JP 2019-043886 A

Accordingly, it is an object of the present invention to provide a hair cleanser that exerts an effect of inhibiting fading of dyed hair during washing. As a result of intensive studies, the inventors of the present invention have found that the combined use of zinc glycinate and tannic acid, which is a specific polyphenol, in a hair cleanser exhibits a remarkably excellent effect of suppressing fading during washing. He found the headline and completed the present invention.
That is, the present invention is as shown below.

The present invention
[1] A hair cleansing agent characterized by containing the following component A, the following component B and the following component C is provided.
Component A: Zinc glycinate Component B: Tannic acid Component C: Amphoteric surfactant [2] The mass ratio of Component B to Component A (Component B/Component A) satisfies the range of 1/20 to 5/1. is preferred.
[3] The hair cleansing agent of the present invention preferably does not substantially contain sodium laureth sulfate and/or sodium lauryl sulfate.
[4] The hair cleanser of the present invention is preferably used for hair that has been dyed with a hair dye.

In the hair cleansing agent of the present invention, component A: zinc glycinate and component B: tannic acid are used in combination, and component C: an amphoteric surfactant is used in combination to enhance the effect of suppressing fading during hair washing. It has the best possible effect. That is, the hair cleansing agent of the present invention exhibits a particularly remarkable effect of suppressing fading on hair that has been dyed with a hair dye.

In addition, the hair cleansing agent of the present invention exhibits excellent formulation stability without causing precipitation, etc., even when component A: zinc glycinate and component B: tannic acid are used in combination.

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below.

The hair cleanser of the present invention contains zinc glycinate, tannic acid and an amphoteric surfactant. In this specification, zinc glycinate is referred to as "component A", tannic acid is referred to as "component B", and amphoteric surfactant is referred to as "component C".

The hair cleansing agent of the present invention is characterized by containing at least the above component A, the above component B and the above component C.

The component A, the component B and the component C, which are essential components of the present invention, will be described in detail below.

[Component A]
The component A is zinc glycine, and is a compound represented by the INCI name (International Cosmetic Ingredient Dictionary and Handbook, 15th Edition, Vol. 3, 2014, p.3882): ZINC GLYCINATE. In the present invention, by using the above-described component A, it is possible to exhibit an excellent effect of suppressing fading during hair washing.

In the present invention, a commercially available product can also be used as the above component A. The commercially available product of component A is not particularly limited, whether it is a single raw material or a mixed raw material with other components, as long as the desired effects are exhibited. Specific commercial products include, for example, trade name "NIKKOL Glycine Zinc Complex" (manufactured by Nippon Surfactant Kogyo Co., Ltd.).

The content of component A in the hair cleansing agent of the present invention is not particularly limited as long as it can exhibit the desired effect. It is preferably from 0.1 mass % to 4.0 mass %, more preferably from 0.1 mass % to 2.0 mass %. In addition, the content of the above component A is the amount converted into a pure content.

By using component A in combination with component B described later, it is possible to exhibit the effect of enhancing the effect of suppressing fading during hair washing, compared to when component A is used alone.

[Component B]
Component B is tannic acid, and is a compound represented by INCI name (International Cosmetic Ingredient Dictionary and Handbook, 15th Edition, Vol. 3, 2014, p.3523): TANNIC ACID. In the present invention, by using the above component B and using it in combination with the above component A, it is possible to exhibit a remarkably excellent effect of suppressing fading during hair washing.

In the present invention, a commercially available product can also be used as the component B described above. The commercially available product of component B is not particularly limited, whether it is a single raw material or a mixed raw material with other components, as long as the desired effects are exhibited. Specific commercial products include, for example, the trade name “Tannic Acid” (manufactured by Fuji Chemical Industry Co., Ltd.).

The content of component B in the hair cleansing agent of the present invention is not particularly limited as long as the desired effect can be exhibited. It is preferably from 0.2 mass % to 2.0 mass %, more preferably from 0.2 mass % to 1.0 mass %. In addition, the content of the above component B is an amount converted to a pure content.

The ratio of the content of the component B to the content of the component A in the hair cleansing agent of the present invention (component B/component A) is not particularly limited as long as the desired effect can be exhibited. From the viewpoint of exhibiting a remarkably excellent anti-fading effect, it preferably satisfies the range of 1/20 to 5/1, and more preferably satisfies the range of 1/10 to 2/1.

As described above, by using the component A and the component B in combination, it is possible to exhibit an excellent effect of suppressing fading of the dye, which could not be satisfied by conventional attempts. In particular, by using it as a hair cleansing agent in combination with component C described later, it is possible to exert a particularly remarkable effect of suppressing fading of dyes during hair washing. In addition, even if the above component A and the above component B are used in combination, it is possible to exhibit an excellent effect that precipitation or the like does not occur and the stability of the formulation is not adversely affected.

[Component C]
Component C above is an amphoteric surfactant. In the present invention, the use of the component C makes it possible to exert a hair cleansing effect without adversely affecting the effect of suppressing the fading of the dye due to the combined use of the component A and the component B.

Examples of Component C include glycine type amphoteric surfactants, aminopropionic acid type amphoteric surfactants, aminoacetate betaine type amphoteric surfactants, sulfobetaine type amphoteric surfactants, and the like. These components C may be used singly or in combination of two or more.

In the present invention, it is most preferable to use a betaine aminoacetate amphoteric surfactant among the component C from the viewpoint of exerting an excellent cleaning effect without adversely affecting the effect of suppressing fading.

Specific examples of the betaine aminoacetate type amphoteric surfactant include, for example, undecylenamidopropyl betaine, oliamidopropyl betaine, oleamidopropyl betaine, cocamidopropyl betaine, shea amidopropyl betaine, soyamidopropyl betaine, palm Nucleic fatty acid amidopropyl betaine, babasamidopropyl betaine, myristamidopropyl betaine, meadowfoam amidopropyl betaine, lauramidopropyl betaine, ricinoleate amidopropyl betaine, horse oil fatty acid amidopropyl betaine, lauryl betaine, stearyl betaine, dihydroxyethylstearyl betaine etc. These betaine aminoacetate type amphoteric surfactants may be used singly or in combination of two or more.

Among the above betaine aminoacetate type amphoteric surfactants, lauramidopropyl betaine is most preferred from the viewpoint of maximizing the effect of suppressing dye fading during hair washing, which is a unique effect of the present invention.

In the present invention, a commercially available product can also be used as the component C described above. The commercially available product of component C is not particularly limited, whether it is a single raw material or a mixed raw material with other components, as long as the desired effects are exhibited. Commercially available products of lauramidopropyl betaine include, for example, the trade name “ANHOLEX LB-2” (manufactured by Miyoshi Oil Co., Ltd.).

The content of component C in the hair cleansing agent of the present invention is not particularly limited as long as it can exhibit the desired effect. From the point of view, it is preferably 4% by mass to 20% by mass, more preferably 8% by mass to 16% by mass, based on 100% by mass of the agent. In addition, the content of the above-mentioned component C is the amount in terms of pure content.

[Other ingredients]
In addition to the above ingredients, the hair cleansing agent of the present invention may include, for example, surfactants such as anionic surfactants and nonionic surfactants; silicones, fats and oils, waxes, hydrocarbons, higher fatty acids, higher alcohols and esters. Moisturizers, perfumes, pH adjusters, thickeners, film-forming agents, chelating agents, alcohols, alkaline agents, vitamins, anti-inflammatory agents, hair growth promoters, astringents, antioxidants, preservatives , ultraviolet absorbers, colorants, plant extracts, fermented plant extracts, purified water, etc., can be appropriately blended according to the purpose.

The pH of the hair cleansing agent of the present invention is not particularly limited as long as the desired effect can be exhibited. It preferably satisfies the range of 7.0, more preferably satisfies the range of 4.0 to 6.0. If the pH is less than 3.0, the dye tends to be eluted from the hair, making it difficult to fade, which is not preferred. The fading susceptibility is more pronounced in hair dyed with basic dyes. On the other hand, if the pH exceeds 7.0, tannic acid, which is component B, tends to precipitate, which is not preferable.

In the present invention, a pH adjuster may or may not be used as long as it can be adjusted to the above pH range. , and salts thereof can be used.

In addition, in the hair cleanser of the present invention, if a specific anionic surfactant widely used as a surfactant with strong detergency is used, acid dyes, basic dyes, HC dyes, and nitro dyes are removed from the hair during hair washing. Direct dyes such as are easy to come off. Therefore, in order to fully exhibit the effect of suppressing fading during hair washing, it is preferred that the composition does not substantially contain an anionic surfactant with strong detergency. Specifically, it preferably does not contain sodium laureth sulfate and/or sodium lauryl sulfate. The term "substantially does not contain" in the present invention means that sodium laureth sulfate and/or sodium lauryl sulfate are not separately contained, and a small amount of sodium laureth sulfate and/or lauryl sulfate contained in each compounding component Sodium sulphate is not excluded.

Moreover, the hair cleansing agent of the present invention preferably does not substantially contain a cationic surfactant from the viewpoint of maintaining the stability of the formulation and sufficiently exhibiting the effect of suppressing fading during hair washing. In the present invention, "substantially free of cationic surfactant" means that a cationic surfactant is not separately contained, and even a small amount of cationic surfactant contained in each compounding component is excluded. not a thing

The properties of the hair cleansing agent of the present invention are not particularly limited as long as the desired effects can be exhibited, but liquid, gel, cream, mist, wax, and foam are preferred, for example.

The method for producing the hair cleansing agent of the present invention is not particularly limited, but for example, it can be produced by a known method. Specifically, for example, the above components are mixed, and for example, a method of mixing using a known mixing device such as a disper mixer or a paddle mixer, or a method of emulsifying using a homomixer or the like can be mentioned. The invention is not limited only to these manufacturing methods.

The hair cleansing agent of the present invention is preferably used for hair that has been dyed with a hair dye, since it exerts an effect of suppressing fading of the dye during hair washing. More specifically, the hair is dyed with a hair dye containing at least one direct dye selected from acid dyes, basic dyes, HC dyes and nitro dyes, which is a dye that is easily removed from the hair when washing the hair, and does not contain an oxidation dye. It is more preferably used on treated hair.

Examples of hair dyes containing at least one direct dye selected from acid dyes, basic dyes, HC dyes and nitro dyes and not containing oxidation dyes include hair color treatments and hair manicures. It is not limited to hair material.

The hair cleansing agent of the present invention is widely used in cosmetics, quasi-drugs, designated quasi-drugs, pharmaceuticals, miscellaneous goods, and the like.

EXAMPLES The present invention will be described in more detail below based on examples, but the present invention is not limited to these examples. In addition, the compounding quantity represents "mass %" unless otherwise specified.

[Preparation of test hair bundle]
A hair dye (1) or a hair dye (2) having the following composition was prepared according to a conventional method, and a test hair tress (1) and a test hair tress (2) were prepared by the following dyeing method.

<Hair dye (1): hair color treatment> (mass%)
Cetanol 5.0
Ethylhexyl palmitate 1.0
Steartrimonium bromide 0.6
stearamidopropyl dimethylamine 0.5
BG 3.0
Isopropanol 0.2
Basic Blue 99 0.5
HC blue 2 0.3
HC yellow 2 0.2
4-hydroxypropylamino-3-nitrophenol 0.2
Ammonium hydrogen carbonate 0.8
Phenoxyethanol 0.3
Purified water Balance
Total 100.0

<Hair dye (2): hair manicure> (% by mass)
Ethanol 15.0
benzyl alcohol 6.0
BG 3.0
Citric acid 1.3
Xanthan gum 1.0
Purple 401 0.3
Yellow 4 0.3
Black 401 0.2
Purified water Balance
Total 100.0

<Dyeing treatment>
2.0 g of the above hair dye (1): hair color treatment or hair dye (2): hair manicure was applied to 1.5 g of 11 cm human gray hair (manufactured by Beaulux Co., Ltd.) and heated at 25° C. for 10 minutes. After the standing, it was washed with tap water and air-dried. The tress dyed in this manner was used as a test tress.
The hair bundle dyed with hair dye (1) was designated as test hair bundle (1), and the hair bundle dyed with hair dye (2) was designated as test hair bundle (2).

[Sample preparation]
According to the composition shown in Table 1 below, hair cleansing agents of Examples 1 to 5 and Comparative Examples 1 to 5 were prepared according to a conventional method and subjected to the following tests. The results are also shown in Table 1. In addition, all compounding amounts in the table are values converted into pure components. In addition, a liquid dosage form was adopted in order to make it possible to more clearly determine the presence or absence of precipitation due to the zinc glycinate of component A.

<Test Example 1: Evaluation of formulation stability>
Each sample of Examples and Comparative Examples was sealed in a 50 mL transparent glass container and stored at a constant temperature of 25° C. (±2° C.) for 24 hours. After that, the appearance was visually observed and evaluated according to the following criteria.

<Evaluation criteria for formulation stability>
○ (Good): No precipitates are observed △ (Insufficient): Precipitates are slightly observed × (Poor): Precipitates are clearly observed

In the following Test Example 2 (color fading confirmation test), the test was performed on the samples for which the results of the above Test Example 1 (Evaluation of Formulation Stability) were other than "x".

<Test Example 2: Fading Confirmation Test>
(Washing treatment of test hair bundle)
Wet test hair bundle (1) or test hair bundle (2) sufficiently with tap water, apply 0.5 g of each sample of Examples and Comparative Examples, wash so that it is familiar, and wash with tap water. Afterwards, it was air-dried.
The above washing action was repeated 10 times, and the degree of discoloration was evaluated by the following evaluation method.

(Evaluation method: Color difference measurement)
Using a color difference meter (product name: Color Reader CR-13, manufactured by Konica Minolta Japan Co., Ltd.), the color of the test hair tress before washing treatment with each sample and the test hair after washing treatment. The color difference (ΔE value) of the bundle color was determined. Incidentally, the smaller the color difference, the smaller the fading.

As is clear from Table 1, Examples 1 to 5, which satisfy the configuration of the present invention, contain at least one direct dye selected from acid dyes, basic dyes, HC dyes and nitro dyes, and contain oxidation dyes. It can be seen that fading does not progress even after washing the hair multiple times for the hair that has been dyed with a hair dye that does not contain any dye. That is, it can be seen that the hair cleansing agent of the present invention exhibits an excellent effect of suppressing hair discoloration.

On the other hand, it can be seen that the hair cleansing agents of Comparative Examples 1 and 2, in which zinc glycinate and tannic acid are not used in combination, do not exhibit a sufficient anti-fading effect. The combination of zinc glycinate and tea leaf extract containing a large amount of polyphenols (Comparative Example 3), the combination of zinc glycinate and rutin, which is a polyphenol (Comparative Example 4), and the combination of zinc glycinate and logwood extract, which is a natural dye. In all of the combinations (Comparative Example 5), precipitation of aggregates was observed in combination with glycine zinc, indicating that the effect of suppressing fading during hair washing, which is the unique effect of the present invention, could not be exhibited. Self-explanatory.

Claims (4)

A hair cleanser characterized by containing the following component A, the following component B and the following component C.
Component A: Zinc glycine Component B: Tannic acid Component C: Amphoteric surfactant 2. The hair cleansing agent according to claim 1, wherein the mass ratio of said component B to said component A (component B/component A) satisfies the range of 1/20 to 5/1. 3. The hair cleansing agent according to claim 1, which does not substantially contain sodium laureth sulfate and/or sodium lauryl sulfate. 4. The hair cleanser according to any one of claims 1 to 3, which is used for hair dyed with a hair dye.