Abstract: A method for perming or coloring hair, in which hair is treated with a cosmetic composition including a protein-glutaminase and not including an alkaline substance. A method of enhancing hair-permeation of an active ingredient included in a cosmetic composition, in which a protein glutaminase is included in the cosmetic composition. The cosmetic composition does not include an alkaline substance, and the active ingredient is at least one of a hair perm agent and a hair coloring agent.

Abstract: The present invention provides a cosmetic composition containing (A) a powder composed of one or more kinds of the N-medium-chain-acyl basic amino acid powder represented by the following formula (I), (B) an inorganic powder, and (C) an oil material: wherein R is a saturated or unsaturated straight hydrocarbon group having 5-9 carbon atoms, and m is an integer of 1-4.

Abstract: The present invention provides a composition containing (A) and (B), which shows a decreased peculiar odor of acylproline and a salt thereof, has a moist feeling and is superior in the stability: (A) acylproline represented by the formula (1) or a salt thereof (wherein an acyl group represented by R1—CO— is an acyl group induced from saturated or unsaturated fatty acid having 3-23 carbon atoms) (B) a zinc salt of pyrrolidone carboxylate.

Abstract: The present invention provides a composition containing component (A): a compound represented by the formula (1) wherein each symbol is as described in the DESCRIPTION or a salt thereof, component (B): a water-soluble moisturizing component and component (C): water, as a stable composition which is superior in affinity and adhesion to the skin and hair, easily provides effects as a cosmetic, and is also superior in the sustainability of the effect.

Abstract: The present invention provides a composition containing (A) and (B), which shows a decreased peculiar odor of acylproline and a salt thereof, has a moist feeling and is superior in the stability: (A) acylproline represented by the formula (1) or a salt thereof (wherein an acyl group represented by R1—CO— is an acyl group induced from saturated or unsaturated fatty acid having 3-23 carbon atoms) (B) a zinc salt of pyrrolidone carboxylate.

Abstract: A method for perming or coloring hair, in which hair is treated with a cosmetic composition including a protein-glutaminase and not including an alkaline substance. A method of enhancing hair-permeation of an active ingredient included in a cosmetic composition, in which a protein glutaminase is included in the cosmetic composition. The cosmetic composition does not include an alkaline substance, and the active ingredient is at least one of a hair perm agent and a hair coloring agent.

Abstract: Provided is a composition containing a sterol ester, which is an oil poorly soluble in water, and superior in transparency, stability, foaming property, rinsability, skin feel (during rinsing and/or after use), and emollience. A composition containing (A) a sterol ester, (B) one or more anionic surfactants selected from (B1) N-acylamino acid having a C8-22 acyl group or a salt thereof, (B2) polyoxyethylene alkyl ether sulfate or a salt thereof, (C) a betaine-type amphoteric surfactant, (D) glyceryl mono-C8-14 fatty acid ester, (E) C5-6 hydroxyalcohol, and (F) water, and having pH 4-8.

Abstract: The present invention provides a cosmetic composition containing (A) a powder composed of one or more kinds of the N-medium-chain-acyl basic amino acid powder represented by the following formula (I), (B) an inorganic powder, and (C) an oil material: wherein R is a saturated or unsaturated straight hydrocarbon group having 5-9 carbon atoms, and m is an integer of 1-4.

Abstract: The problem of the present invention is to provide a protein hydrophilicity-increasing agent capable of effectively increasing water permeability of (swelling) hair, skin and the like while suppressing damages on the hair, skin and the like constituted of the protein. The present invention solves the problem by providing a protein hydrophilicity-increasing agent containing a protein-glutaminase, and a protein hydrophilicity-increasing agent containing both a protein-glutaminase and transglutaminase.

Abstract: Provided is a composition containing a sterol ester, which is an oil poorly soluble in water, and superior in transparency, stability, foaming property, rinsability, skin feel (during rinsing and/or after use), and emollience. A composition containing (A) a sterol ester, (B) one or more anionic surfactants selected from (B1) N-acylamino acid having a C8-22 acyl group or a salt thereof, (B2) polyoxyethylene alkyl ether sulfate or a salt thereof, (C) a betaine-type amphoteric surfactant, (D) glyceryl mono-C8-14 fatty acid ester, (E) C5-6 hydroxyalcohol, and (F) water, and having pH 4-8.

Abstract: Provision of an N-acyl basic amino acid dispersion superior in dispersibility. The present invention provides a production method of an N-acyl basic amino acid dispersion having a pH of 2 to 12, comprising (1) a step of dissolving an N-acyl basic amino acid in a base solution, and (2) a step of mixing the obtained N-acyl basic amino acid solution with one or more equivalents of an acid relative to the base.

Abstract: Aqueous preservative solutions with a high amino acid content which is excellent in preservation, particularly a preservative effect on fungi, and safety, and is excellent in storage stability so as not to cause a problem such as depositing, coloring or smelling even when it is stored for a long time, and when incorporated in a cosmetic, is capable of imparting a high moisturizing effect without causing a sticky feeling, and imparting an effect of preventing dyed hair from color fading, can be achieved by incorporating pyrrolidone carboxylic acid and/or a salt thereof (Component A), a basic amino acid and/or a salt thereof (Component B), an acidic amino acid and/or a salt thereof (Component C), a neutral amino acid and/or a salt thereof (Component D) and lactic acid and/or a salt thereof (Component E) at a specific incorporation ratio and at a specific pH.

Abstract: Provision of an N-acyl basic amino acid dispersion superior in dispersibility. The present invention provides a production method of an N-acyl basic amino acid dispersion having a pH of 2 to 12, comprising (1) a step of dissolving an N-acyl basic amino acid in a base solution, and (2) a step of mixing the obtained N-acyl basic amino acid solution with one or more equivalents of an acid relative to the base.

Abstract: The present invention provides a cleansing composition for the skin or hair, which contains, together with (A) a sulfate type anionic surfactant and (B) an N-acylalanine or a salt thereof, at least one kind of compound selected from (C) an amphoteric surfactant, (D) a cationic polymer, (E) a silicone compound and (F) an oily material, wherein the mixing ratio of (A) and (B) of (A)/(B)=99/1-70/30 (wt %) and the concentration of ingredient (A) or (C) is the highest of all the surfactant components in the composition.

Abstract: The present invention provides a cleansing composition for the skin or hair, which contains, together with (A) a sulfate type anionic surfactant and (B) an N-acylalanine or a salt thereof, at least one kind of compound selected from (C) an amphoteric surfactant, (D) a cationic polymer, (E) a silicone compound and (F) an oily material, wherein the mixing ratio of (A) and (B) of (A)/(B)=99/1?70/30 (wt %) and the concentration of ingredient (A) or (C) is the highest of all the surfactant components in the composition.

Abstract: Aqueous preservative solutions with a high amino acid content which is excellent in preservation, particularly a preservative effect on fungi, and safety, and is excellent in storage stability so as not to cause a problem such as depositing, coloring or smelling even when it is stored for a long time, and when incorporated in a cosmetic, is capable of imparting a high moisturizing effect without causing a sticky feeling, and imparting an effect of preventing dyed hair from color fading, can be achieved by incorporating pyrrolidone carboxylic acid and/or a salt thereof (Component A), a basic amino acid and/or a salt thereof (Component B), an acidic amino acid and/or a salt thereof (Component C), a neutral amino acid and/or a salt thereof (Component D) and lactic acid and/or a salt thereof (Component E) at a specific incorporation ratio and at a specific pH.

Abstract: A cream-type skin cleansing composition containing substantially no polyhydric alcohol, which weakly acidic with a pH of 4.0 to 6.0, and soft and smooth with a whity appearance is provided, which is excellent in foamability as well as rinsability and in feeling during application, but avoids from becoming hard at low temperatures, and which can be readily prepared by using a common simple mixer, which contains an N-long-chain acylglycine or a salt thereof, a polyoxyethylene alkyl ether sulfate salt, a betaine type amphoteric surfactant, an inorganic or organic salt and water at a specified amounts and pH.

Abstract: The present invention provides a cleansing composition for the skin or hair, which contains, together with (A) a sulfate type anionic surfactant and (B) an N-acylalanine or a salt thereof, at least one kind of compound selected from (C) an amphoteric surfactant, (D) a cationic polymer, (E) a silicone compound and (F) an oily material, wherein the mixing ratio of (A) and (B) of (A)/(B)=99/1-70/30 (wt %) and the concentration of ingredient (A) or (C) is the highest of all the surfactant components in the composition.

Abstract: A cosmetic composition which comprises one or more kinds of mono-N&agr;-long-chain acylarginines and/or one or more kinds of powders selected from powders subjected to a surface treatment with a mono-N&agr;-long-chain acylarginine and (B) a silicone compound for cosmetics and/or an amphoteric surfactant and is preferably applied to hair or skin. The composition has a feature of imparting gloss and elasticity to hair and skin, whilst little sliminess to skin and scalp during rinsing and little tackiness after drying.

Abstract: A detergent composition comprising (A) 5 to 30% by weight of at least one kind of surfactant selected from the group consisting of an anionic surfactant, an amphoteric surfactant, and a nonionic surfactant based on the total weight of the composition; (B) 0.1 to 5% by weight of a substance selected from the group consisting of an N-long-chain acyl acidic amino acid and a salt thereof based on the total weight of the composition; and (C) less than 0.2% by weight of a cationic polymer compound based on the total weight of the composition. The detergent composition provided has good foaming property and causes no friction during rinsing, as well as has excellent feeling of use by imparting moistness without tackiness to skin and providing good hair control without stiffness.