Abstract: The object is to provide a skin whitening agent having an excellent skin whitening effect. A compound expressed by the following Formula (1), or an acid addition salt thereof is used as an active ingredient of the skin whitening agent: wherein, X represents an alkylene group having 1 to 2 carbon atoms, where a hydrogen atom may be substituted with a methyl group; Y represents COOR1 or CH2OR2; R1 represents a hydrogen atom, or an optionally branched alkyl group having 1 to 6 carbon atoms; and R2 represents a hydrogen atom or an optionally branched acyl group having 1 to 6 carbon atoms.

Abstract: The object is to provide a wrinkle improving agent having an excellent wrinkle improving effect. A compound expressed by the following Formula (1), or an acid addition salt thereof is used as an active ingredient of a wrinkle improving agent. (Wherein X represents an alkylene group having 1 to 2 carbon atoms in which a hydrogen atom may be substituted with a methyl group, Y represents COOR1 or CH2OR2, R1 represents a hydrogen atom, or an optionally branched alkyl group having 1 to 6 carbon atoms, and R2 represents a hydrogen atom, or an optionally branched acyl group having 1 to 6 carbon atoms.

Abstract: The object is to provide a wrinkle improving agent having an excellent wrinkle improving effect. A compound expressed by the following Formulas (1) and/or (2) is used as an active ingredient of a wrinkle improving agent. (In Formulas (1) and (2), R and R? independently represent a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, R? represents an alkylene group having 1 to 3 carbon atoms, and n represents a number of 0 or 1.

Abstract: Provided is a new application for D-pantothenyl alcohol. It is a melanogenesis inhibitor comprising D-pantothenyl alcohol.

Abstract: The object is to provide a wrinkle improving agent having an excellent wrinkle improving effect. A compound expressed by the following Formula (1), or an acid addition salt thereof is used as an active ingredient of a wrinkle improving agent. (Wherein X represents an alkylene group having 1 to 2 carbon atoms in which a hydrogen atom may be substituted with a methyl group, Y represents COOR1 or CH2OR2, R1 represents a hydrogen atom, or an optionally branched alkyl group having 1 to 6 carbon atoms, and R2 represents a hydrogen atom, or an optionally branched acyl group having 1 to 6 carbon atoms.

Abstract: The object is to provide a wrinkle improving agent having an excellent wrinkle improving effect. A compound expressed by the following Formulas (1) and/or (2) is used as an active ingredient of a wrinkle improving agent. (In Formulas (1) and (2), R and R? independently represent a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, R? represents an alkylene group having 1 to 3 carbon atoms, and n represents a number of 0 or 1.

Abstract: Provided is a new application for D-pantothenyl alcohol. It is a melanogenesis inhibitor comprising D-pantothenyl alcohol.

Abstract: An external preparation for skin is provided for amelioration of pigmentation. The skin preparation includes a compound represented by the following general formula (1), an isomer thereof, and/or a pharmacologically acceptable salt thereof: wherein R1 represents an aromatic group; R2 represents a hydrogen atom, or a linear or branched chain alkyl or acyl group having 1 to 4 carbon atoms; and R3 represents a hydrogen atom or a linear chain or branched chain alkyl group having 1 to 4 carbon atoms.

Abstract: Disclosed is a melanin production inhibitor which has an excellent inhibitory activity on the production of melanin and is highly safe. The melanin production inhibitor is represented by general formula (1) (excluding clotrimazole) and/or a pharmacologically acceptable salt thereof. In the formula, A1, A2 and A3 are independently selected from a hydrogen atom, an aryl group which may have a substituent, and an aromatic heterocyclic group which may have a substituent.

Abstract: An object of the present invention is to provide a prophylactic or ameliorating agent for pigmentation having a novel scaffold and an external preparation for skin containing the same as a component.

Abstract: Disclosed is a melanin production inhibitor which has an excellent inhibitory activity on the production of melanin and is highly safe. The melanin production inhibitor is represented by general formula (1) (excluding clotrimazole) and/or a pharmacologically acceptable salt thereof. In the formula, A1, A2 and A3 are independently selected from a hydrogen atom, an aryl group which may have a substituent, and an aromatic heterocyclic group which may have a substituent.

Abstract: An object is to provide an external preparation for skin preferably usable to prevent or ameliorate pigmentation. The object is achieved by providing a preventing or ameliorating agent for pigmentation, consisting of a compound represented by the following general formula (1), an isomer thereof, and/or a pharmacologically acceptable salt thereof, and an external preparation for skin containing the same as a component: [wherein R1 represents an unsubstituted aromatic group or an aromatic group having any substituent; R2 represents a hydrogen atom, a linear chain or branched chain alkyl group having a number of carbon atom or atoms of 1 to 4, or an acyl group having a linear or branched alkyl chain having a number of carbon atom or atoms of 1 to 4; and R3 represents a hydrogen atom or a linear chain or branched chain alkyl group having a number of carbon atom or atoms of 1 to 4.

Abstract: Disclosed is a melanin production inhibitor which has an excellent inhibitory activity on the production of melanin and is highly safe. The melanin production inhibitor is represented by general formula (1) (excluding clotrimazole) and/or a pharmacologically acceptable salt thereof. In the formula, A1, A2 and A3 are independently selected from a hydrogen atom, an aryl group which may have a substituent, and an aromatic heterocyclic group which may have a substituent.

Abstract: An object of the present invention is to provide a prophylactic or ameliorating agent for pigmentation having a novel scaffold and an external preparation for skin containing the same as a component.

Abstract: An object is to provide an external preparation for skin preferably usable to prevent or ameliorate pigmentation. The object is achieved by providing a preventing or ameliorating agent for pigmentation, consisting of a compound represented by the following general formula (1), an isomer thereof, and/or a pharmacologically acceptable salt thereof, and an external preparation for skin containing the same as a component: [wherein R1 represents an unsubstituted aromatic group or an aromatic group having any substituent; R2 represents a hydrogen atom, a linear chain or branched chain alkyl group having a number of carbon atom or atoms of 1 to 4, or an acyl group having a linear or branched alkyl chain having a number of carbon atom or atoms of 1 to 4; and R3 represents a hydrogen atom or a linear chain or branched chain alkyl group having a number of carbon atom or atoms of 1 to 4.

Abstract: Disclosed is a melanin production inhibitor which has an excellent inhibitory activity on the production of melanin and is highly safe. The melanin production inhibitor comprises a compound represented by general formula (1) (excluding clotrimazole), and/or a pharmacologically acceptable salt thereof.

Abstract: Disclosed are: a novel skin-whitening agent; and a skin-whitening cosmetic or quasi-drug which is highly effective for prevention/amelioration of melanopathy and is prepared using the skin-whitening agent. The cosmetic contains a compound represented by the general formula (I) and/or a salt thereof as an active ingredient. In the general formula (I), R1 and R2 independently represent a secondary or tertiary alkyl group having 3 to 7 carbon atoms; and R3 represents a hydrogen atom, an alkyl group having 1 to 4 carbon atoms or an alkoxy group having 1 to carbon atoms.