Hair cleansing agent composition

Abstract

To provide a hair detergent composition containing cocamidopropyl betaine which has excellent temporal stability and also excels in foamability, foam sustinability, cleaning property and moist feeling after finish.SOLUTION: A hair detergent composition having pH of 6.0 or less at 25°C contains the following components (A) to (C): (A) cocoylmethyltaurine or salt thereof; (B) cocamidopropyl betaine; and (C) N-acyl neutral amino acid salt and / or lauryldimethylaminoacetic acid betaine, where the content mass ratio [(A) / (B)] of the component (A) to the component (B) exceeds 1.4, the content mass ratio of the component (B) to the total amount of anionic surfactant and amphoteric surfactant in the hair detergent composition is 0.1 or more, and the composition does not substantially contain sulfuric acid-based surfactant and / or olefinsulfonic acid-based surfactant.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a hair cleansing composition and a method for suppressing the clouding and / or solidification of a hair cleansing composition.

Background Art

[0002] Conventionally, hair cleansing compositions such as shampoos contain various surfactants such as nonionic, anionic, and amphoteric surfactants. These surfactants are selected according to their functions such as detergency, usability such as good foaming and viscosity suitable for use, and sensory properties such as smoothness during rinsing, according to their purposes and uses, and are used in combination.

[0003] To date, anionic surfactants such as sulfuric acid-based and olefin sulfonic acid-based surfactants having high foaming properties, detergency, and appropriate viscosity have been widely used. However, in cosmetics directly applied to hair and skin, due to the increasing interest in scalp and skin care, cosmetics using amino acid-based surfactants with low irritation have become popular, and furthermore, the development of cosmetics labeled as "sulfate-free" has been promoted.

[0004] Amino acid-based surfactants are surfactants with low irritation that have a cleaning action without damaging the skin and hair compared to conventional anionic surfactants. Furthermore, since they are manufactured using raw materials of natural raw materials, they are considered to be useful as environmentally friendly and sustainable surfactants (for example, see Patent Document 1). Therefore, techniques using amino acid-based surfactants have been studied so far. For example, a skin cleansing composition containing at least one selected from specific fatty acid salts, 2-ethylhexyl glyceryl ether, and fatty acid esters having a fatty acid residue with 4 to 10 carbon atoms, and an N-acyl amino acid-based surfactant in specific contents and specific ratios (for example, see Patent Document 2) has been proposed.

[0005] Hair is composed of keratin, a sulfur-containing fibrous protein. The isoelectric point of hair is said to be in the weakly acidic range of pH 4.0 to 5.5. If the pH of the hair treatment agent applied is acidic, the swollen (opened) hair cuticles can be easily closed (see, for example, Patent Document 3). Therefore, a hair cleansing agent composition with a weakly acidic pH is expected to improve the hair treatment effect.

[0006] As described above, there is a need to develop hair cleansing agent compositions that maintain conventional functions (effects) such as foaming and cleansing properties, while also considering irritation and environmental impact, and furthermore, providing excellent hair treatment effects. [Prior art documents] [Patent Documents]

[0007] [Patent Document 1] Special Publication No. 2019-500419 [Patent Document 2] Japanese Patent Publication No. 2014-231481 [Patent Document 3] Japanese Patent Publication No. 2021-109864 [Overview of the project] [Problems that the invention aims to solve]

[0008] However, the technologies described in Patent Documents 1 to 3 do not address the occurrence of clouding and solidification over time in weakly acidic hair cleansing compositions containing cocamidopropyl betaine, and this was previously unknown. Furthermore, the technologies described in Patent Documents 1 to 3 also did not consider the long-term stability of weakly acidic hair cleansing compositions containing cocamidopropyl betaine.

[0009] Therefore, the present invention aims to provide a hair cleansing composition containing cocoyl methyl taurine or a salt thereof, cocamidopropyl betaine, and an N-acyl neutral amino acid salt and / or lauryldimethylaminoacetic acid betaine, which exhibits excellent stability over time.

[0010] Furthermore, another object of the present invention is to provide a hair cleansing composition that is excellent in terms of lathering ability, foam retention, cleansing ability, and moisturizing effect after finishing. [Means for solving the problem]

[0011] The inventors investigated the development of a hair cleansing composition that, even without containing sulfate-based or olefin sulfonate-based surfactants, possesses a suitable viscosity for excellent usability, and exhibits superior foaming, foam retention, cleansing properties, and a moisturizing finish. As a result, they found that a combination of cocoyl methyl taurine or its salt and cocamidopropyl betaine exhibits excellent effects. However, under weakly acidic conditions, when the mass ratio of cocamidopropyl betaine to the total amount of anionic and amphoteric surfactants in the hair cleansing composition was 0.1 or higher, turbidity and even solidification occurred, indicating room for improvement. As a result of further diligent investigation into surfactant combinations, we discovered that a hair cleansing composition containing cocoyl methyl taurine or its salt, N-acyl neutral amino acid salt and / or lauryl dimethylaminoacetic acid betaine, and containing cocoyl methyl taurine or its salt and cocamidopropyl betaine in a specific ratio, suppresses clouding and solidification even under weakly acidic conditions, resulting in a stable hair cleansing composition that maintains a transparent to translucent appearance. Furthermore, we found that this composition also excels in lathering, foam retention, cleansing properties, and moisturizing after use, thus completing the present invention.

[0012] In other words, the present invention is as follows. [1] The following components (A) to (C); (A) Cocoyl methyl taurine or its salt (B) Cocamidopropyl betaine (C)N-acyl neutral amino acid salts and / or lauryldimethylaminoacetic acid betaine It contains the above, and the mass ratio of component (A) to component (B) [(A) / (B)] exceeds 1.4, The mass ratio of component (B) to the total amount of anionic surfactants and amphoteric surfactants in the hair cleansing composition is 0.1 or more. Substantially free of sulfate-based surfactants and / or olefin sulfonate-based surfactants, This is a hair cleansing composition having a pH of 6.0 or less at 25°C. [2] The hair cleansing composition according to [1], wherein the content of component (A) is 2.0 to 20% by mass, and the content of component (B) is 1.0 to 10% by mass. [3] The hair cleansing composition according to [1] or [2], wherein the content of component (C) is 0.1 to 15% by mass. [4] The hair cleansing composition according to [1] or [2], wherein component (C) contains at least an N-acyl neutral amino acid salt. [5] The hair cleansing composition according to [1] or [2], wherein component (C) is an N-acyl neutral amino acid salt and lauryldimethylaminoacetic acid betaine. [6] The hair cleansing composition described in [1] or [2] further contains an N-acyl acidic amino acid salt as component (D). [7] The hair cleansing composition according to [6], wherein component (C) contains at least an N-acyl neutral amino acid salt, and the mass ratio of the N-acyl neutral amino acid salt of component (C) to component (D) [(N-acyl neutral amino acid salt) / (D)] is 0.5 or more. [8] This method is characterized by containing component (A) cocoyl methyl taurine or a salt thereof and component (C) N-acyl neutral amino acid salt and / or lauryl dimethylaminoacetic acid betaine, and is used to suppress the clouding and / or solidification of a hair cleansing composition containing component (B) cocamidopropyl betaine. [Effects of the Invention]

[0013] According to the present invention, it is possible to provide a hair cleansing composition that is excellent in stability over time, particularly excellent in stability over time at low temperatures. Furthermore, it is possible to provide a hair cleansing composition that is also excellent in foaming properties, foam retention, detergency, and the moist feeling after finishing.

Brief Description of the Drawings

[0014] [Figure 1] It is a photograph of the appearance of the hair cleansing composition of Example 1. [Figure 2] It is a photograph of the appearance of the hair cleansing composition of Example 7. [Figure 3] It is a photograph of the appearance of the hair cleansing composition of Comparative Example 1.

Best Mode for Carrying Out the Invention

[0015] Hereinafter, preferred embodiments for carrying out the present invention will be described. The embodiments described below show an example of a typical embodiment of the present invention, and the scope of the present invention is not construed narrowly thereby. The present invention is not limited only to the following embodiments. In this specification, "X to Y" indicating a range includes X and Y and means "X or more and Y or less".

[0016] Component (A) used in the present invention is cocoyl methyl taurine or a salt thereof, and is a condensate of coconut oil fatty acid and N-methyl taurine or a salt thereof. It may also be neutralized by a basic substance in the formulation during the manufacturing process of the invention. In the present invention, component (A) is expected to have the effect of suppressing the occurrence of clouding and solidification over time, as well as the effect of a hair cleansing composition such as cleansing properties, and can be used to make a hair cleansing composition with excellent stability over time. The counterbase for the cocoyl methyl taurine salt of component (A) is not particularly limited, and those commonly used as bases such as sodium (Na), potassium (K), monoethanolamine, diethanolamine, triethanolamine (TEA), ammonium, and arginine can be used, but sodium is particularly preferred in the present invention. Specific examples of component (A) include cocoyl methyl taurine, sodium cocoyl methyl taurine, potassium cocoyl methyl taurine, and TEA cocoyl methyl taurine.

[0017] Among the components (A) used in the present invention, commercially available examples of sodium cocoyl methyl taurate include 30% by mass (hereinafter simply abbreviated as %) aqueous solution of sodium cocoyl methyl taurate, such as Diapon K-SF (manufactured by NOF Corporation) and Neoscope CN-30 (Toho Chemical Industry Co., Ltd.), which can be suitably used in the present invention.

[0018] The content of component (A) in the present invention is not particularly limited, but it is preferably 2.0% or more, more preferably 4.0% or more, even more preferably 6.0% or more, and even more preferably 7.0% or more in the hair cleansing composition. Also, it is preferably 20% or less, more preferably 19% or less, even more preferably less than 19%, even more preferably 15% or less, and particularly preferably 13% or less. Also, it is preferably 2.0 to 20%, more preferably 4.0 to 19%, even more preferably 6.0% or more and less than 19%, even more preferably 7.0 to 15%, and even more preferably 7.0 to 13%. These ranges are preferable because they result in better stability over time, good foaming, good foam retention, and superior cleansing performance.

[0019] Component (B) used in the present invention is cocamidopropyl betaine, an amphoteric surfactant composed of coconut oil fatty acid amidopropyl dimethylaminoacetic acid. In the present invention, component (B) can be used to make a hair cleansing composition that is excellent in foam retention and foaming, and can also be used to make a hair cleansing composition that is excellent in cleansing and has a suitable viscosity. Examples of commercially available products include TEGO BETAIN L-7 OK (manufactured by EVONIK GOLDSCHMIDT GMBH), which is a 30% aqueous solution of cocamidopropyl betaine, and can be suitably used in the present invention.

[0020] The content of component (B) in the present invention is not particularly limited, but it is preferably 1.0% or more, more preferably 1.3% or more, even more preferably more than 1.3%, even more preferably 2.0% or more, especially more preferably 3.0% or more, and even more preferably more than 3.0%. Also, it is preferably 10% or less, more preferably 9.0% or less, even more preferably less than 9.0%, even more preferably 8.0% or less, and especially preferably 7.0% or less. Also, it is preferably 1.0 to 10%, more preferably 1.3 to 9.0%, even more preferably more than 1.3% and less than 9.0%, even more preferably 2.0 to 8.0%, especially preferably 3.0 to 7.0%, and even more preferably more than 3.0% and 7.0% or less. These ranges are preferable because they result in better long-term stability and foam retention.

[0021] In the present invention, component (A) is expected to have the effect of suppressing the occurrence of clouding and solidification over time, while component (B) is excellent in cleansing ability, foaming ability, foam retention ability, and viscosity increase, but is suggested to be a possible cause of clouding. Therefore, in order to obtain a hair cleansing composition that has the effect of a hair cleansing composition while also having excellent stability over time, it is important to specify the mass ratio of component (A) to component (B) [(A) / (B)]. From the viewpoint of stability over time and foaming ability, the mass ratio of components (A) and (B) [(A) / (B)] is greater than 1.4, preferably 1.45 or more, more preferably 1.5 or more, and still preferably 1.53 or more, and from the viewpoint of foaming ability and cleansing ability, 1.55 or more is still more preferable, and 1.6 or more is particularly preferable. The upper limit of the mass ratio [(A) / (B)] is not particularly limited, as it results in an excess of component (A) relative to component (B), improving stability over time. However, it is generally preferred to be 5.0 or less, more preferably 4.5 or less, even more preferably 4.3 or less, and even more preferably 4.1 or less from the viewpoint of good foaming. It is preferable to keep it within these ranges because it provides excellent stability over time and can be expected to have a high effect in terms of good foaming and cleaning performance.

[0022] The component (C) used in the present invention is an N-acyl neutral amino acid salt and / or lauryldimethylaminoacetic acid betaine. In the present invention, component (C) is expected to have effects as a hair cleansing composition, such as good foaming, good foam retention, and cleansing properties, as well as the effect of suppressing the occurrence of clouding and solidification over time, thereby making it possible to make a hair cleansing composition with excellent stability over time.

[0023] The N-acyl neutral amino acid salt of component (C) is obtained by acylating at least one amino group in a neutral amino acid, and further neutralizing it with a basic substance. Alternatively, it may be neutralized with a basic substance in the formulation during the manufacturing process of the invention.

[0024] The N-acyl neutral amino acids of component (C) and the amino acids that constitute its salt are preferably those with an equal number of carboxyl groups and amino groups, such as glycine, alanine, methylalanine, and sarcosine. These amino acids may be L-forms, D-forms, or DL-forms. One of these may be used, or two or more selected from the above group may be used in mixture form. From the viewpoint of long-term stability and washability, methylalanine, glycine, and alanine are preferred as neutral amino acids, methylalanine and glycine are more preferred, and methylalanine is even more preferred.

[0025] The acyl group constituting the N-acyl neutral amino acid salt of such component (C) is preferably an acyl group derived from a saturated or unsaturated linear or branched fatty acid having 8 to 22 carbon atoms. For example, examples of fatty acids include caprylic acid, capric acid, lauric acid, myristic acid, stearic acid, isostearic acid, palmitic acid, oleic acid, linoleic acid, behenic acid, coconut oil fatty acid, palm oil fatty acid, and hydrogenated beef tallow fatty acid, and these can be used individually or in combination of two or more. In particular, from the viewpoint of long-term stability and washability, lauric acid, myristic acid, palmitic acid, stearic acid, coconut oil fatty acid, and palm oil fatty acid are preferred, with lauric acid and coconut oil fatty acid being more preferred.

[0026] The N-acyl neutral amino acid salt is not particularly limited and can be an inorganic salt such as sodium (Na), potassium (K), calcium, magnesium, aluminum, or zinc, or an organic amine such as ammonia, monoethanolamine, diethanolamine, or triethanolamine (TEA), or an organic salt such as a basic amino acid such as arginine or lysine. One or more of these can be used in combination. From the viewpoint of long-term stability and washability, salts of sodium, potassium, and triethanolamine are preferred, and salts of potassium and triethanolamine are more preferred.

[0027] Specific examples of the N-acyl neutral amino acid salt of component (C) of the present invention include sodium salts, potassium salts, TEA salts, and arginine salts of lauroyl glycine, cocoyl glycine, lauroyl alanine, cocoyl alanine, lauroyl sarcosine, cocoyl sarcosine, and lauroyl methyl alanine, and one or more of these can be appropriately selected and used. Among these, one or more selected from the potassium salts and TEA salts of lauroyl glycine, cocoyl glycine, lauroyl alanine, cocoyl alanine, and lauroyl methyl alanine are preferred from the viewpoint of good foaming, good foam retention, and viscosity increase. Furthermore, among these, one or more selected from lauroyl glycine K, cocoyl glycine K, and lauroyl methyl alanine TEA are more preferred from the viewpoint of long-term stability and washing properties, cocoyl glycine K and / or lauroyl methyl alanine TEA are even more preferred, and lauroyl methyl alanine TEA is even more preferred. Examples of commercially available products include Alanone ALTA (manufactured by Kawaken Fine Chemicals Co., Ltd.), which is a 30% aqueous solution of lauroyl methylalanine TEA, and can be suitably used in the present invention.

[0028] The component (C) lauryldimethylaminoacetic acid betaine used in the present invention is a compound represented by the following formula (1). C 12 H 25 -N + (CH3)2-CH2COO - ...(1) Furthermore, in the "List of Ingredient Names" compiled by the Japan Cosmetic Industry Association, lauryldimethylaminoacetic acid betaine is referred to as lauryl betaine. A commercially available example is Rikabion A-100 (manufactured by Shin Nippon Rika Co., Ltd.), which is a 30% aqueous solution of lauryl betaine and can be suitably used in the present invention.

[0029] The content of component (C) in the present invention is not particularly limited, but it is preferably 0.1% or more, more preferably 0.5% or more, even more preferably 0.6% or more, even more preferably greater than 0.6%, and particularly preferably 1.0% or more in the hair cleansing composition. Also, 15% or less is preferred, more preferably 12% or less, even more preferably 10% or less, even more preferably 6.0% or less, and particularly preferably 3.0% or less. Also, 0.1 to 15% is preferred, more preferably 0.5 to 12%, even more preferably 0.6 to 10%, even more preferably greater than 0.6% and 6.0% or less, and particularly preferably 1.0 to 3.0%. These ranges are more preferable because they provide better long-term stability and cleansing performance.

[0030] In the present invention, when component (C) is an N-acyl neutral amino acid salt, the content of the N-acyl neutral amino acid salt in the hair cleansing composition is preferably 0.3% or more, more preferably more than 0.3%, even more preferably 0.5% or more, and even more preferably 0.6% or more. Also, 12% or less is preferred, less than 12% is more preferred, 6.0% or less is even more preferred, and 3.0% or less is even more preferred. Furthermore, 0.3 to 12% is preferred, more preferably more than 0.3% and less than 12%, even more preferably 0.5 to 6.0%, and even more preferably 0.6 to 3.0%. These ranges are preferred because they provide superior stability over time and cleansing properties.

[0031] In the present invention, when component (C) is lauryldimethylaminoacetic acid betaine, the content of lauryldimethylaminoacetic acid betaine in the hair cleansing composition is preferably 0.5% or more, more preferably 1.0% or more. Furthermore, it is preferably 10% or less, more preferably 6.0% or less, even more preferably 5.0% or less, and even more preferably 4.0% or less. Also, it is preferably 0.5 to 10%, more preferably 1.0 to 6.0%, even more preferably 1.0 to 5.0%, and even more preferably 1.0 to 4.0%. These ranges are preferable because they provide superior stability over time, cleansing performance, and good foam retention and foaming ability.

[0032] In the present invention, component (C) N-acyl neutral amino acid salt and / or lauryldimethylaminoacetic acid betaine can be used alone or in combination of two or more. In the present invention, from the viewpoint of stability over time and good foaming, component (C) preferably contains at least an N-acyl neutral amino acid salt. In addition to the effects as a hair cleansing composition such as good foaming, foam retention, and cleansing properties, it is preferable that component (C) is an N-acyl neutral amino acid salt and lauryldimethylaminoacetic acid betaine, as is the superior stability over time achieved by suppressing the occurrence of clouding and solidification over time. When component (C) is an N-acyl neutral amino acid salt and lauryldimethylaminoacetic acid betaine, there is a suitable range for the content of each component, and the descriptions above for "when component (D) is an N-acyl neutral amino acid salt" and "when component (D) is lauryldimethylaminoacetic acid betaine" can be appropriately adopted for the content of each component.

[0033] In the present invention, it is preferable to further include an N-acyl acidic amino acid salt as component (D) from the viewpoint of maintaining stability over time while providing excellent moisturizing properties after application. Component (D), the N-acyl acidic amino acid salt, is obtained by acyling at least one amino group in an acidic amino acid and further neutralizing it with a basic substance. Alternatively, it may be neutralized with a basic substance in the formulation during the manufacturing process of the invention.

[0034] The N-acyl acidic amino acids of component (D) and the amino acids that constitute the salt thereof are those in which the number of carboxyl groups is greater than the number of amino groups, and examples include glutamic acid, aspartic acid, α-aminoadipic acid, cysteic acid, homocysteic acid, etc. These amino acids may be L-forms, D-forms, or DL-forms. One of these may be used, or two or more selected from the above group may be used in mixture form. From the viewpoint of long-term stability and washability, glutamic acid and aspartic acid are more preferred as acidic amino acids, and glutamic acid is even more preferred.

[0035] The acyl group constituting the N-acyl acidic amino acid salt of such component (D) is preferably an acyl group derived from a saturated or unsaturated linear or branched fatty acid having 8 to 22 carbon atoms. For example, fatty acids include caprylic acid, capric acid, lauric acid, myristic acid, stearic acid, isostearic acid, palmitic acid, oleic acid, linoleic acid, behenic acid, coconut oil fatty acid, palm oil fatty acid, and hydrogenated beef tallow fatty acid, and these can be used individually or in combination of two or more. Lauric acid, myristic acid, palmitic acid, stearic acid, coconut oil fatty acid, and palm oil fatty acid are particularly preferred from the viewpoint of long-term stability and washability, with lauric acid and coconut oil fatty acid being more preferred.

[0036] The N-acyl acidic amino acid salt is not particularly limited and can be an inorganic salt such as sodium (Na), potassium (K), calcium, magnesium, aluminum, or zinc, or an organic amine such as ammonia, monoethanolamine, diethanolamine, or triethanolamine (TEA), or an organic salt such as a basic amino acid such as arginine or lysine. One or more of these can be used in combination. In particular, from the viewpoint of long-term stability and washability, salts of sodium, potassium, and triethanolamine are preferred, and salts of sodium, potassium, and triethanolamine are more preferred.

[0037] Specific examples of the N-acyl acidic amino acid salt of component (D) of the present invention include lauroyl glutamic acid, cocoyl glutamic acid, stearoyl glutamic acid, myristoyl glutamic acid, sodium salt, potassium salt, TEA salt, arginine salt of lauroyl aspartic acid, cocoyl aspartic acid, stearoyl aspartic acid, and myristoyl aspartic acid, and one or more of these can be appropriately selected and used. Among these, from the viewpoint of good foaming, foam retention, and viscosity increase, one or more selected from the potassium salts and TEA salts of lauroyl glutamate and cocoyl glutamate are preferred. Furthermore, from the viewpoint of long-term stability and moist finish, one or more selected from sodium lauroyl glutamate, TEA cocoyl glutamate, potassium cocoyl glutamate, and sodium cocoyl glutamate are more preferred, sodium lauroyl glutamate and / or TEA cocoyl glutamate are even more preferred, and TEA cocoyl glutamate is even more preferred. As a commercially available example, Amisoft CT-12S (manufactured by Ajinomoto Co., Ltd.), which is a 30% aqueous solution of TEA cocoyl glutamate, can be suitably used.

[0038] The content of component (D) in the present invention is not particularly limited, but it is preferably 0.1% or more, more preferably 0.2% or more, and even more preferably 0.3% or more in the hair cleansing composition. Also, it is preferably 5.0% or less, more preferably 4.0% or less, and even more preferably 3.0% or less. Furthermore, it is preferably 0.1 to 5.0%, more preferably 0.2 to 4.0%, and even more preferably 0.3 to 3.0%. By setting the content within these ranges, the moist feeling after finishing is improved without impairing the stability over time, etc., so it is more preferable.

[0039] As mentioned above, in the present invention, it is preferable that component (C) contains at least an N-acyl neutral amino acid salt. When component (C) contains at least an N-acyl neutral amino acid salt, the mass ratio of the N-acyl neutral amino acid salt of component (C) to component (D) [(N-acyl neutral amino acid salt) / (D)] is not particularly limited, but is preferably 0.5 or more, more preferably 0.8 or more, and even more preferably 1.0 or more. It is also preferably 30 or less, and more preferably 20 or less. These ranges are preferable because they allow for better moisturizing after application while maintaining stability over time.

[0040] The pH of the hair cleansing composition in the present invention is 6.0 or less at 25°C, preferably between 3.5 and 6.0, more preferably between 4.0 and 5.7, and even more preferably between 4.0 and 5.5. This range is preferable because it provides excellent repair effects through cuticle tightening and also improves lathering ability. In this application, pH was measured at 25°C using a glass electrode type hydrogen ion concentration meter (manufactured by Horiba, Ltd.).

[0041] In the hair cleansing composition of the present invention, when the mass ratio of component (B) to the total amount of anionic surfactants and amphoteric surfactants in the hair cleansing composition is 0.1 or more, the hair cleansing composition has excellent foam retention and foaming properties, as well as cleansing properties and a suitable viscosity. However, there is a concern that the stability of the composition may decrease. In the present invention, it is preferable that the mass ratio is 0.15 or more, and more preferably 0.17 or more. The upper limit of the mass ratio is not particularly limited, but it is usually preferable to be 10 or less. It is preferable to set it within these ranges because it is superior in foam retention and foaming properties, as well as superior in cleansing properties and viscosity. Here, if component (A) is sodium cocoyl methyl taurate, component (B) is cocamidopropyl betaine, component (C) is lauroyl methylalanine TEA and lauryl dimethylaminoacetic acid betaine, and component (D) is cocoyl glutamate TEA, then component (A), lauroyl methylalanine TEA of component (C) and component (D) are anionic surfactants, and component (B) and lauryl dimethylaminoacetic acid betaine of component (C) are amphoteric surfactants. Therefore, the mass ratio of component (B) to the total amount of anionic surfactants and amphoteric surfactants in the hair cleansing composition can be calculated as [(B) / (A)+(B)+(C)+(D)]. If the hair cleansing composition contains anionic surfactants and amphoteric surfactants other than those (A) to (D) above, these can also be included in the calculation.

[0042] In the hair cleansing composition of the present invention, from the viewpoint of low irritation to the skin and hair, it is preferable that it substantially does not contain sulfate-based surfactants and / or olefin sulfonate-based surfactants, and more preferably that it substantially does not contain sulfate-based surfactants and olefin sulfonate-based surfactants. Here, substantially does not contain means that the content in the composition is 1.0% or less, preferably 0.5% or less, more preferably 0.1% or less, and even more preferably 0% (not contained).

[0043] In addition to the above-mentioned components, the hair cleansing composition of the present invention may contain, in a qualitative and quantitative range that does not impair the effects of the present invention, components commonly used in cosmetics and topical skin preparations, namely water (purified water, hot spring water, deep sea water, etc.), surfactants other than components (A) to (D), oils, gelling agents, powders, water-soluble alcohols, water-soluble polymers, film-forming agents, moisturizers, antibacterial agents, fragrances, deodorants, salts, chelating agents, UV absorbers, pH adjusters, cooling agents, plant extracts, vitamins, beauty ingredients, etc.

[0044] The type of water used is not particularly limited, but examples include purified water, distilled water, ion-exchanged water, tap water, hot spring water, and deep-sea water. In the present invention, the water content in the composition is not particularly limited, but is preferably 40-90%, and more preferably 50-85%.

[0045] Other surfactants besides components (A) to (D) include cationic surfactants such as alkylamine salts, amine salts of polyamines and amino alcohol fatty acid derivatives, alkyl quaternary ammonium salts, aromatic quaternary ammonium salts, pyridium salts, and imidazolium salts, as well as stearyltrimethylammonium chloride, behenyltrimethylammonium chloride, cetyltrimethylammonium chloride, distearyldimethylammonium chloride, dibehenyldimethylammonium chloride, dicetyldimethylammonium chloride, stearyldimethylbenzylammonium chloride, dilauryldimethylammonium chloride, dipolyoxyethylene (15EO) coconut oil alkylmethylammonium chloride, dipolyoxyethylene (4EO) lauryl ether dimethylammonium chloride, dicocoylethyl hydroxyethylmonium sulfate, distearoylethyl hydroxyethylmonium methosulfate, distearoylethyl hydroxyethylmonium methosulfate, dipalmitoylethyl hydroxyethylmonium methosulfate, and palmitamidopropyltrimonium chloride.Nonionic surfactants include sorbitan fatty acid esters, glycerin fatty acid esters, polyglycerin fatty acid esters, propylene glycol fatty acid esters, polyethylene glycol fatty acid esters, sucrose fatty acid esters, polyoxyethylene alkyl ethers, polyoxypropylene alkyl ethers, polyoxyethylene alkylphenyl ethers, polyoxyethylene fatty acid esters, polyoxyethylene sorbitan fatty acid esters, polyoxyethylene sorbitol fatty acid esters, polyoxyethylene glycerin fatty acid esters, polyoxyethylene propylene glycol fatty acid esters, polyoxyethylene castor oil, polyoxyethylene hydrogenated castor oil, polio Examples of such surfactants include oxyethylene phytostanol ether, polyoxyethylene phytosterol ether, polyoxyethylene cholestanol ether, polyoxyethylene cholesteryl ether, polyoxyalkylene-modified organopolysiloxane, polyoxyalkylene-alkyl-comodified organopolysiloxane, lauric acid diethanolamide, coconut oil fatty acid diethanolamide, coconut oil fatty acid nomoethanolamide, polyoxyethylene coconut oil fatty acid nomoethanolamide, lauric acid monoisopropanolamide, coconut oil fatty acid monoisopropanolamide, polyoxypropylene coconut oil fatty acid monoisopropanolamide, alkanolamide, sugar ether, sugar amide, etc. Examples of anionic surfactants include acyl isethionates such as sodium N-lauroyl isethionate and potassium N-lauroyl isethionate, N-acyl polypeptide salts such as sodium lauroyl hydrolyzed silk, fatty acid salts such as sodium stearate and TEA stearate, and sulfosuccinic acids such as sodium sulfosuccinate.Examples of amphoteric surfactants include octyldimethylaminoacetic acid betaine, myristyldimethylaminoacetic acid betaine, cetyldimethylaminoacetic acid betaine, coconut oil fatty acid amidopropyl dimethylaminoacetic acid betaine, lauric acid amidopropyl dimethylaminoacetic acid betaine, lauryl dihydroxyethylaminoacetic acid betaine, and cetyl dihydroxyethylaminoacetic acid betaine, as well as betaine-type surfactants other than lauryldimethylaminoacetic acid betaine in component (B) and component (C). Examples of imidazoline-type surfactants include sodium N-coconut oil fatty acid acyl-N-carboxymethyl-N-hydroxyethylethylenediamine and disodium N-coconut oil fatty acid acyl-N-carboxymethoxyethyl-N-carboxymethylethylenediamine. Sodium laurylaminodiacetate is also an example.

[0046] As oils, oily components such as higher alcohols, hydrocarbon oils, ester oils, fats and oils, and silicones can be used. For example, higher alcohols such as lauryl alcohol, myristyl alcohol, palmityl alcohol, stearyl alcohol, behenyl alcohol, hexadecyl alcohol, oleyl alcohol, isostearyl alcohol, hexyldodecanol, octyldodecanol, cetostearyl alcohol, 2-decyltetradecinol, cholesterol, phytosterols, sitosterols, lanosterols, monostearyl glycerin ether (batyl alcohol), ozokerite, squalane, squalene, etc. Lesin, paraffin, paraffin wax, liquid paraffin, pristane, polyisobutylene, microcrystalline wax, hydrocarbons such as petrolatum, diisobutyl adipate, 2-hexyldecyl adipate, di-2-heptylundecyl adipate, N-alkyl glycol monoisostearate, isocetyl isostearate, trimethylolpropane triisostearate, ethylene glycol di-2-ethylhexanoate, cetyl 2-ethylhexanoate, trimethylolpropane tri-2-ethylhexanoate Pan, pentaerythritol tetra-2-ethylhexanoate, cetyl octanoate, octyldodecyl gum ester, oleyl oleate, octyldodecyl oleate, decyl oleate, neopentyl glycol dicaprate, triethyl citrate, 2-ethylhexyl succinate, isocetyl stearate, butyl stearate, diisopropyl sebacate, di-2-ethylhexyl sebacate, cetyl lactate, myristyl lactate, isopropyl palmitate, 2-ethylhexyl palmitate, 2-hexyl palmitate Sildecyl, 2-heptylundecyl palmitate, cholesteryl 12-hydroxystearate, dipentaerythritol fatty acid esters, isopropyl myristate, octyldodecyl myristate, 2-hexyldecyl myristate, myristyl myristate, hexyldecyl dimethyloctanoate, ethyl laurate, hexyl laurate, diisostearyl malate and other ester oils, beeswax, carnauba wax, candelilla wax, whale wax and other waxes, palm oil, palm kernel oil, olive oil, safflower oil,Vegetable oils such as soybean oil and cottonseed oil; animal oils such as beef tallow, beef tallow, beef bone tallow, hardened beef tallow, hardened oil, turtle oil, pork tallow, horse tallow, mink oil, liver oil, egg yolk oil; lanolin, liquid lanolin, reduced lanolin, lanolin alcohol, hard lanolin, lanolin acetate, lanolin fatty acid isopropyl lanolin derivatives; low-molecular-weight dimethylpolysiloxane, high-molecular-weight dimethylpolysiloxane, methylphenylpolysiloxane, decamethylcyclopentasiloxane, octamethylcyclotetrasiloxane Examples include xanes, polyether-modified polysiloxanes, polyoxyalkylene / alkylmethylpolysiloxane / methylpolysiloxane copolymers, alkoxy-modified polysiloxanes, alkyl-modified polysiloxanes, cross-linked organopolysiloxanes, fluorine-modified polysiloxanes, amino-modified polysiloxanes, glycerin-modified polysiloxanes, higher alkoxy-modified silicones, higher fatty acid-modified silicones, silicone resins, silicone rubbers, silicone resins, and other silicone-based materials.

[0047] Examples of gelling agents include dextrin fatty acid esters such as dextrin palmitate, dextrin stearate, and dextrin 2-ethylhexanoate palmitate; sucrose fatty acid esters such as sucrose palmitate and sucrose stearate; benzylidene derivatives of sorbitol such as monobenzylidene sorbitol and dibenzylidene sorbitol; and organically modified clay minerals such as dimethylbenzylddecylammonium montmorillonite clay and dimethyldioctadecylammonium montmorillonite clay.

[0048] As for powders, any powder commonly used in cosmetics can be used, regardless of its shape (spherical, needle-shaped, plate-shaped, etc.), particle size (fuzzy, fine particles, pigment-grade, etc.), or particle structure (porous, non-porous, etc.). For example, inorganic powders include magnesium oxide, barium sulfate, calcium sulfate, magnesium sulfate, calcium carbonate, magnesium carbonate, talc, synthetic mica, mica, kaolin, sericite, muscovite, synthetic mica, phlogopite, rose mica, biotite, lithium mica, silicic acid, anhydrous silicic acid, aluminum silicate, magnesium silicate, and aluminum silicate. As for organic powders, we have: magnesium ammonium, calcium silicate, barium silicate, strontium silicate, tungstate metal salts, hydroxyapatite, vermiculite, hydylite, montmorillonite, zeolite, ceramic powder, dicalcium phosphate, alumina, aluminum hydroxide, boron nitride, boron nitride, etc.; as for organic powders, we have: polyamide powder, polyester powder, polyethylene powder, polypropylene powder, polystyrene powder, polyurethane powder, benzoguanamine powder, polymethylbenzoguanamine powder, tetrafluoroethylene powder, polymethyl methacrylate powder, cellulose powder, silk powder, nylon powder, nylon 12 powder, nylon 6 powder, styrene-acrylic acid copolymer powder, divinylbenzene-styrene copolymer powder, vinyl resin powder, urea resin powder, phenolic resin powder, fluororesin powder, silicon resin powder, acrylic resin powder, melamine resin powder, epoxy resin powder, polycarbonate resin powder, microcrystalline fiber powder, lauroyl lysine, etc.; as for colored pigments, Inorganic red pigments such as iron oxide, iron hydroxide, and iron titanate; inorganic brown pigments such as γ-iron oxide; inorganic yellow pigments such as yellow iron oxide and ochre; inorganic black pigments such as black iron oxide and carbon black; inorganic purple pigments such as manganese violet and cobalt violet; inorganic green pigments such as chromium hydroxide, chromium oxide, cobalt oxide, and cobalt titanate; inorganic blue pigments such as Prussian blue and ultramarine; lake-formed tar-based dyes; lake-formed natural dyes; and composite powders made by compounding these powders; and as pearl pigments, titanium dioxide-coated mica, titanium dioxide-coated mica, bismuth oxychloride,Examples of pigments include titanium dioxide-coated bismuth oxychloride, titanium dioxide-coated talc, fish scale foil, titanium dioxide-coated colored mica, etc. Metal powder pigments include aluminum powder, copper powder, stainless steel powder, etc. Tar dyes include Red No. 3, Red No. 104, Red No. 106, Red No. 201, Red No. 202, Red No. 204, Red No. 205, Red No. 220, Red No. 226, Red No. 227, Red No. 228, Red No. 230, Red No. 401, Red No. 505, Yellow No. 4, Yellow No. 5, Yellow No. 202 Yellow No. 203, Yellow No. 204, Yellow No. 401, Blue No. 1, Blue No. 2, Blue No. 201, Blue No. 404, Green No. 3, Green No. 201, Green No. 204, Green No. 205, Orange No. 201, Orange No. 203, Orange No. 204, Orange No. 206, Orange No. 207, etc. Natural pigments include powders selected from carminic acid, laccaic acid, calsamine, brazilin, crocin, etc. Compounds of these powders, or powders surface-treated with oils, silicones, or fluorine compounds are also acceptable.

[0049] Water-soluble alcohols include lower alcohols such as ethanol and isopropanol, and polyhydric alcohols such as glycerin, diglycerin, ethylene glycol, diethylene glycol, triethylene glycol, propylene glycol, dipropylene glycol, 1,3-butylene glycol, and polyethylene glycol.

[0050] Water-soluble polymers include mucopolysaccharides and their salts selected from chondroitin sulfate, hyaluronic acid, mucin, dermatan sulfate, heparin, and keratan sulfate; plant-derived polymers such as acacia gum, tragacanth, galactan, carob gum, guar gum, karaya gum, carrageenan, pectin, agar, quince seed, algae colloid, trant gum, locust bean gum, and galactomannan; microbial polymers such as xanthan gum, dextran, succinoglucan, and pullulan; starch-based polymers such as starch, carboxymethyl starch, and methylhydroxypropyl starch; methylcellulose, ethylcellulose, methylhydroxypropylcellulose, and carboxymethylcellulose. Examples of polymers include cellulose-based polymers such as sodium cellulose, hydroxymethylcellulose, hydroxypropylcellulose, nitrocellulose, sodium cellulose sulfate, sodium carboxymethylcellulose, crystalline cellulose, and cellulose; alginate-based polymers such as sodium alginate and propylene glycol alginate; vinyl-based polymers such as polyvinyl methyl ether, carboxyvinyl polymer, and alkyl-modified carboxyvinyl polymer; polyoxyethylene-based polymers, polyoxyethylene-polyoxypropylene copolymer polymers; and inorganic water-soluble polymers such as sodium polyacrylate, polyethyl acrylate, polyethyleneimine, bentonite, laponite, and hectorite. Examples of anionic polymers commonly used as setting agents include acrylic acid / ethyl acrylate / N-tert-butylacrylamide copolymer, acrylic resin alkanolamine, vinyl methyl ether / ethyl maleate copolymer, vinyl methyl ether / butyl maleate copolymer, and vinyl acetate / crotonic acid copolymer. Examples of amphoteric polymers include N-methacryloylethyl N,N-dimethylammonium·α-N-methylcarboxybetaine·alkyl methacrylate copolymer, hydroxypropyl acrylate·butylaminoethyl methacrylate·octylamide acrylate copolymer, acrylic acid·dimethyldiallylammonium chloride·acrylamide copolymer, and dimethyldiallylammonium chloride·acrylic acid copolymer.Examples of cationic polymers include vinylpyrrolidone-N,N-dimethylaminoethyl methacrylate copolymer diethyl sulfate, diallyldimethylammonium chloride-hydroxyethylcellulose, glycidyltrimethylammonium chloride-hydroxyethylcellulose, dimethyldiallylammonium chloride polymer, and dimethyldiallylammonium chloride-acrylamide copolymer. Examples of nonionic polymers include polyvinylpyrrolidone, vinylpyrrolidone-vinyl acetate copolymer, polyvinyl alcohol, and polyurethane.

[0051] Antimicrobial agents include benzoic acid, sodium benzoate, salicylic acid, carbolic acid, sorbic acid, potassium sorbate, parachlormethacresol, hexachlorophene, benzalkonium chloride, chlorhexidine chloride, trichlorocarbanilide, photosensitizer, bis(2-pyridylthio-1-oxide)zinc, isopropylmethylphenol, and glyceryl caprylate. Preservatives include parahydroxybenzoic acid esters and phenoxyethanol.

[0052] Examples of vitamins include vitamin A and its derivatives, vitamin B and its derivatives, vitamin C and its derivatives, vitamin E and its derivatives, vitamin F compounds such as linolenic acid and its derivatives, vitamin K compounds such as phytonadione, menaquinone, menadione, and menadiol, vitamin P compounds such as eriocitrin and hesperidin, biotin, carnitine, and ferulic acid.

[0053] The properties of the hair cleansing composition of the present invention are not particularly limited and include liquid, gel, emulsion, cream, semi-solid, and solid forms. In the present invention, it is preferable that the composition be liquid in order to suitably exhibit effects such as good foaming and good foam retention. Here, liquid means a state in which it is fluid at 25°C. Specifically, this refers to a viscosity measured using a Brookfield rotational viscometer at 25°C that is 20,000 mPa·s or less, preferably 10,000 mPa·s or less, and more preferably 5,000 mPa·s or less.

[0054] Furthermore, the dosage form of the hair cleansing agent composition is not particularly limited and includes water-based, solubilized water-based, solubilized type, oil-in-water type, water-in-oil type, water-in-oil type in water, oil-in-water type in oil, multilayer type, etc., with water-based and solubilized types being preferred.

[0055] The hair cleansing composition of the present invention can be applied to a variety of containers, such as bottles and bottles with dispensers, depending on its intended use, method of use, and environment of use.

[0056] The hair cleansing composition of the present invention may be used as is as the final formulation, or it may be mixed with other ingredients to form the final formulation. Here, the final formulation may be a pharmaceutical or cosmetic product, and specifically, a hair cleansing cosmetic such as a shampoo. In the present invention, the final formulation is preferably a hair cleansing cosmetic product because it maintains a transparent to translucent appearance due to its excellent stability over time, and because it provides good lathering, good foam retention, and a cleansing effect and a moist feeling after finishing. The method of use is not particularly limited as long as it is a normal method of use.

[0057] The properties of the formulation are not particularly limited and include liquid, gel, emulsion, cream, semi-solid, and solid forms. In the present invention, it is preferable that the formulation be liquid in order to suitably exhibit effects such as good foaming and foam retention. Here, liquid means a state in which it is fluid at 25°C. Specifically, this refers to a viscosity measured at 25°C using a Brookfield rotational viscometer that is 20,000 mPa·s or less, preferably 10,000 mPa·s or less, and more preferably 5,000 mPa·s or less.

[0058] Furthermore, the dosage form of the formulation is not particularly limited and includes water-based, solubilized water-based, solubilized type, oil-in-water type, water-in-oil type, water-in-oil-in-water type, oil-in-water-in-oil type, multilayer type, etc., with water-based and solubilized types being preferred.

[0059] Furthermore, the content of the hair cleansing agent composition of the present invention contained in the above-mentioned formulation is not particularly limited, but is preferably 1 to 90%.

[0060] (Manufacturing method) The composition of this embodiment is not particularly limited and can be prepared by conventional methods. For example, it can be obtained by adding components (A) to (D) to the remaining water and mixing and stirring. pH adjustment may be performed during mixing or after mixing. Furthermore, the mixing of components (A) to (D) may be subjected to heat treatment, in which case pH adjustment may be performed during heating and mixing or after cooling.

[0061] Furthermore, as another aspect of the present invention, it can be used as a method to suppress the clouding and / or solidification of a hair cleansing composition containing component (B) cocamidopropyl betaine, characterized by containing component (A) cocoyl methyl taurine or a salt thereof and component (C) N-acyl neutral amino acid salt and / or lauryl dimethylaminoacetic acid betaine.

[0062] Furthermore, this method may also be used as a method to suppress turbidity and / or solidification of a hair cleansing composition in which the mass ratio of component (B) to the total amount of anionic and amphoteric surfactants in the hair cleansing composition is 0.1 or more, and the pH at 25°C is 6.0 or less. In the description of the above method, explanations of component (A), component (B), component (C), component (D), their respective contents, their respective mass ratios, manufacturing methods, their respective compositions, their respective methods, and their respective terms will be omitted as appropriate, but the explanations for the hair cleansing composition described above also apply to this method and can be adopted as appropriate.

[0063] Furthermore, the present invention may also employ the following configuration. <1> The following components (A) to (C); (A) Cocoyl methyl taurine or its salt (B) Cocamidopropyl betaine (C)N-acyl neutral amino acid salts and / or lauryldimethylaminoacetic acid betaine It contains the above, and the mass ratio of component (A) to component (B) [(A) / (B)] exceeds 1.4, The mass ratio of component (B) to the total amount of anionic surfactants and amphoteric surfactants in the hair cleansing composition is 0.1 or more. Substantially free of sulfate-based surfactants and / or olefin sulfonate-based surfactants, This is a hair cleansing composition having a pH of 6.0 or less at 25°C. <2> The hair cleansing composition according to <1>, wherein the content of component (A) is 2.0 to 20% by mass, and the content of component (B) is 1.0 to 10% by mass. <3> The hair cleansing composition according to <1> or <2>, wherein the content of component (C) is 0.1 to 15% by mass. <4> The hair cleansing composition according to any one of <1> to <3>, wherein the component (C) is an N-acyl neutral amino acid salt, and its content is 0.1 to 12% by mass in the hair cleansing composition. <5> The hair cleansing composition according to any one of <1> to <4>, wherein the component (C) is lauryldimethylaminoacetic acid betaine, and its content is 0.5 to 10% by mass. <6> The hair cleansing composition according to any one of <1> to <5> contains at least one N-acyl neutral amino acid salt as component (C). <7> The hair cleansing composition is one of any one of <1> to <6>, wherein component (C) is an N-acyl neutral amino acid salt and lauryldimethylaminoacetic acid betaine. <8> Furthermore, the hair cleansing composition described in any one of <1> to <7> contains an N-acyl acidic amino acid salt as component (D). <9> The hair cleansing composition according to <8>, wherein component (C) contains at least an N-acyl neutral amino acid salt, and the mass ratio of the N-acyl neutral amino acid salt of component (C) to component (D) [(N-acyl neutral amino acid salt) / (D)] is 0.5 or more. [Examples]

[0064] The effects of the present invention will be explained using the following examples and comparative examples. However, the technical scope of the present invention is not limited to the following examples. Unless otherwise specified, each operation is performed at room temperature (25°C). In the examples, the units "parts" or "%" may be used, but unless otherwise specified, they represent "parts by mass" or "mass%".

[0065] Examples 1-12 and Comparative Examples 1-2: Hair Cleansing Compositions The hair cleansing compositions shown in Tables 1 and 2 below were prepared by the following manufacturing method, and evaluated according to the evaluation method and criteria shown below for (a) stability over time (5°C / day), (b) foaming ability, (c) foam retention, (d) cleansing ability, and (e) moisturizing effect after finishing. The results are also shown in Tables 1 and 2. The content in the table represents the content of the essential components of each ingredient. Furthermore, the appearance photographs of the hair cleansing compositions of Example 1, Example 7, and Comparative Example 1 at 5°C / day are shown in Figures 1 to 3.

[0066] [Table 1]

[0067] [Table 2] Note 1: Diapon K-SF (manufactured by NOF Corporation) Note 2: Viewlight LCA (manufactured by Sanyo Chemical Industries, Ltd.) Note 3: TEGO BETAIN L-7 OK (manufactured by EVONIK GOLDSCHMIDT GmbH) Note 4: Alanone ALTA (manufactured by Kawasaki Fine Chemical Co., Ltd.) Note 5: Amilight GCK-12 (manufactured by Ajinomoto Co., Inc.) Note 6: Amisoft CT-12S (manufactured by Ajinomoto Co., Inc.) Note 7: Lycabion A-100 (manufactured by Shin Nippon Rika Co., Ltd.)

[0068] (Manufacturing method) A: Ingredients (1) to (7) were mixed at room temperature. B: Components (8) to (9) were mixed at room temperature. A hair cleansing agent composition was obtained by adding A to C:B and mixing them uniformly.

[0069] (Evaluation method) Each of the following evaluation items was evaluated using the method described below. (Evaluation criteria) (i) Stability over time (5°C / 1 day) (b) Good foaming (h) Good foam retention (ii) Good cleanability (e) Moisturizing effect after finishing

[0070] <Evaluation Method 1: (a) Stability over time (5°C / 1 day)> For long-term stability (5°C / day), each sample was placed in a glass container, sealed, and stored in a constant temperature bath at 5°C for one day. Changes in appearance (changes in turbidity (whitening) and solidification) were observed and judged according to the following three-stage criteria. [3-stage evaluation criteria] (Judgment) :(Judgment criteria) ◎ (Excellent): No change in turbidity or solidification is observed. ○ (Good): Slight changes in turbidity and / or solidification are observed, but there are no problems with usability. × (Not acceptable): Significant changes in turbidity and / or solidification are observed. If a precipitate is observed, it will be judged as solidification. Furthermore, a slight change in turbidity means that when the sample (hair cleansing agent composition) is placed in a glass container and sealed, the background of the glass container can be seen through the turbidity (see Figure 2).

[0071] <Evaluation Method 2: (b) Lathering ability, (c) Lather retention, (d) Cleansing ability, (e) Moisturizing effect after use> A panel of 10 cosmetic product evaluators washed their hair with 6g of each sample, without applying any styling products, and evaluated the following aspects on a 5-point scale using the evaluation criteria (A) below: lathering ability, lather retention (foam persistence), cleansing ability, and the moisturizing effect after rinsing. The average score of each sample was then used to determine the final result using the judgment criteria (B) below. [5-point rating scale (A)] (Evaluation result): (Score) Excellent: 4 Good: 3 Normal: 2 Slightly poor: 1 Bad: 0 [Judgment criteria (B)] (Judgment): (Average score of the ratings) ◎ (Excellent): 3.5 or higher ○ (Good): 3.0 or higher and less than 3.5 △ (Somewhat unacceptable): 1.5 or higher and less than 3.0 × (Not allowed): Less than 1.5

[0072] As is clear from the results in Tables 1-2 and Figures 1-3, the hair cleansing compositions of Examples 1-12 showed superior stability over time compared to the hair cleansing compositions of Comparative Examples 1 and 2, with no observed turbidity or solidification at 5°C. Furthermore, they were superior in terms of lathering ability, foam retention, cleansing ability, and moisturizing effect after finishing. In addition, the hair cleansing compositions of Examples 1-12 showed no change in turbidity (turbidity) or solidification even after being stored in a constant temperature bath at 5°C for one month, demonstrating excellent stability over time.

[0073] On the other hand, in Comparative Example 1, where sodium laureth-4 acetate, an anionic surfactant, was used instead of component (A), clouding was observed, indicating insufficient stability over time, and the resulting moisturizing effect was not satisfactory. Furthermore, in Comparative Example 2, where the mass ratio of component (A) to component (B) [(A) / (B)] was 1.4 or less, clouding was observed, indicating insufficient stability over time, and the foaming ability was not satisfactory.

[0074] Example 13: Shampoo (component) (mass%) 1. Sodium Cocoyl Methyl Taurate (Note 1) (Component (A)) 8.0 2. Cocamidopropyl betaine (Note 3) (Component (B)) 5.0 3. Lauroyl methylalanine TEA (Note 4) (Component (C)) 0.5 4. Cocoyl glutamate TEA (Note 6) (Component (D)) 3.0 5. Cocoyl glycinate K (Note 5) (Component (C)) 0.5 6. Lauryldimethylaminoacetic acid betaine (Note 7) (Component (C)) 1.0 7. Lauramidopropyl betaine 1.0 8. Glycosyltrehalose 0.5 9 Glycerin 3.0 10 Propylene glycol 1.0 11 Citric acid 0.5 12. Succinic acid 0.01 13. Sodium benzoate 0.5 14 Polyquaternium-7 0.5 15 Polyquaternium-10 0.1 16 Polyquaternium-22 0.1 17 PPG-2 Cocamide 1.0 18 Cocamide MEA 1.0 19 Fragrance 1.0 20 Polyquaternium-51 0.01 21 Polyquaternium-65 0.01 22. Purified water remaining amount

[0075] (Manufacturing method) A: Mix 10% of component (22) and components (1) to (7) uniformly at 80°C. B: Add ingredients (8) to (13) to A and mix uniformly at 80°C. C: Mix 1% of component (22) and components (20) to (21) uniformly at room temperature. D: Mix ingredients (17) to (19) uniformly at room temperature. E: Add components (14) to (16) to the remainder of component (22) and swell uniformly at 80°C. Mix F:B and E and let it cool to room temperature. Add C and D to G:F and mix uniformly. H:G was filled into a container to obtain shampoo (pH=5.0 at 25℃).

[0076] The shampoo of Example 13 exhibited excellent stability over time, good lathering, good foam retention, cleansing ability, and a moisturizing effect after use. Furthermore, the mass ratio of component (A) to component (B) [(A) / (B)] was 1.6, and the mass ratio of component (B) to the total amount of anionic and amphoteric surfactants in the hair cleansing composition was 0.26.

[0077] Example 14: Shampoo (Component) (mass%) 1. Sodium Cocoyl Methyl Taurate (Note 1) (Component (A)) 8.0 2. Cocamidopropyl betaine (Note 2) (Component (B)) 5.0 3. Lauroyl methylalanine TEA (Note 3) (Component (C)) 1.0 4. Cocoyl glutamate TEA (Note 4) (Component (D)) 1.0 5. Lauryldimethylaminoacetic acid betaine (Note 5) (Component (C)) 1.0 6. Sodium cocoamphoacetate 1.0 7 1,3-Butylene glycol 1.0 8. Hydroxyethylcellulose 0.5 9. Citric acid 0.5 10 Malic acid 0.1 11. Sodium benzoate 0.5 12 Methylparaben 0.1 13 Polyquaternium-7 0.1 14 Polyquaternium-10 0.5 15 PEG-2 Laurate 0.1 16. PEG-75 Dilaurate 0.1 17 Hydrogenated castor oil isostearyl 0.5 18. Ethyl olive fatty acid 0.01 19 Polyglyceryl-10 Decaisostearate 0.01 20 Macadamia nut oil 0.01 21 Phenoxyethanol 75 0.5 22 Fragrance 0.5 23. Purified water remaining amount

[0078] A: Mix 10% of component (23) and components (1) to (8) uniformly at 80°C. B: Add ingredients (9) to (12) to A and mix uniformly at 80°C. C: Add components (13) to (14) to the remainder of component (23) and swell uniformly at 80°C. Mix D:B and C and let it cool to room temperature. E: Mix ingredients (15) to (22) uniformly, add to D, and mix uniformly. F:E was filled into a container to obtain shampoo (pH=5.0 at 25℃).

[0079] The shampoo of Example 14 exhibited excellent stability over time, good lathering, good foam retention, cleansing ability, and a moisturizing effect after use. Furthermore, the mass ratio of component (A) to component (B) [(A) / (B)] was 1.6, and the mass ratio of component (B) to the total amount of anionic and amphoteric surfactants in the hair cleansing composition was 0.29.

Claims

1. The following components (A) to (C): (A) Cocoyl methyl taurine or its salt (B) Cocamidopropyl betaine (C) N-acyl neutral amino acid salt and / or lauryldimethylaminoacetic acid betaine It contains, Furthermore, it contains an N-acyl acidic amino acid salt as component (D), The mass ratio of component (A) to component (B) [(A) / (B)] exceeds 1.

4. The component (C) contains at least an N-acyl neutral amino acid salt, and the mass ratio of the N-acyl neutral amino acid salt of component (C) to component (D) [(N-acyl neutral amino acid salt) / (D)] is 0.5 or more and 30 or less. The mass ratio of component (B) to the total amount of anionic surfactants and amphoteric surfactants in the hair cleansing composition is 0.1 or more. The content of sulfate-based surfactants and / or olefin sulfonate-based surfactants is 1.0% by mass or less based on the total mass of the hair cleansing composition. A hair cleansing composition having a pH of 6.0 or less at 25°C.

2. The hair cleansing composition according to claim 1, wherein the component (C) is an N-acyl neutral amino acid salt and lauryldimethylaminoacetic acid betaine.

3. The following components (A) to (C): (A) Cocoyl methyl taurine or its salt (B) Cocamidopropyl betaine (C) N-acyl neutral amino acid salt and lauryldimethylaminoacetic acid betaine, or lauryldimethylaminoacetic acid betaine It contains the above, and the mass ratio of component (A) to component (B) [(A) / (B)] exceeds 1.

4. The mass ratio of component (B) to the total amount of anionic surfactants and amphoteric surfactants in the hair cleansing composition is 0.1 or more. The content of sulfate-based surfactants and / or olefin sulfonate-based surfactants is 1.0% by mass or less based on the total mass of the hair cleansing composition. A hair cleansing composition having a pH of 6.0 or less at 25°C.

4. The hair cleansing composition according to claim 3, further comprising an N-acyl acidic amino acid salt as component (D).

5. The hair cleansing composition according to claim 1 or 3, wherein the content of component (A) is 2.0 to 20% by mass, and the content of component (B) is 1.0 to 10% by mass.

6. The hair cleansing composition according to claim 1 or 3, wherein the content of component (C) is 0.1 to 15% by mass.

7. It contains component (A) cocoyl methyl taurine or a salt thereof, component (C) N-acyl neutral amino acid salt and / or lauryl dimethylaminoacetic acid betaine, and (D) N-acyl acidic amino acid salt. A method for suppressing the clouding and / or solidification of a hair cleansing composition containing component (B) cocamidopropyl betaine, characterized in that component (C) contains at least an N-acyl neutral amino acid salt, and the mass ratio of the N-acyl neutral amino acid salt of component (C) to component (D) [(N-acyl neutral amino acid salt) / (D)] is 0.5 or more and 30 or less.

8. A method for suppressing the clouding and / or solidification of a hair cleansing composition containing component (B) cocamidopropyl betaine, characterized by containing component (A) cocoyl methyl taurine or a salt thereof and component (C) N-acyl neutral amino acid salt and lauryldimethylaminoacetic acid betaine, or lauryldimethylaminoacetic acid betaine.

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