Abstract: A method for decreasing formation of one or more chemiexcitation-induced dark cyclobutane pyrimidine dimers (dCPDs) in a cell or DNA molecule in a subject, who has been exposed to UV radiation, is provided. The method comprises administering to the subject an effective amount of a dCPD quencher within 8 hours after the exposure. The dCPD quencher is selected from the group consisting of ellagic acid, Porphyra Umbilicalis Extract (including Porphyra Umbilicalis Extract (and) Sodium Lactate (and) Lecithin), mycosporine-like amino acids (MAAs) and synthetic analogues thereof, Scutellaria Baicalensis Root Extract, Chrysanthemum Morifolium Leaf Extract, ferulic acid, fused-ring cyanoacrylates, curcumin, epigallocatechin gallate, Scutellaria Baicalensis Root Extract (and) Acacia Catechu Wood Extract, sorbic acid, Polygonum Cuspidatum Root Extract, Acacia Catechu Extract, dipicolinic acid, squalene, Lonicera Japonica (Honeysuckle) Flower Extract, beta-carotene and combinations thereof.

Abstract: A method for decreasing formation of one or more chemiexcitation-induced dark cyclobutane pyrimidine dimers (dCPDs) in a cell or DNA molecule in a subject, who has been exposed to UV radiation, is provided. The method comprises administering to the subject an effective amount of a dCPD quencher within 8 hours after the exposure. The dCPD quencher is selected from the group consisting of ellagic acid, Porphyra Umbilicalis Extract (including Porphyra Umbilicalis Extract (and) Sodium Lactate (and) Lecithin), mycosporine-like amino acids (MAAs) and synthetic analogues thereof, Scutellaria Baicalensis Root Extract, Chrysanthemum Morifolium Leaf Extract, ferulic acid, fused-ring cyanoacrylates, curcumin, epigallocatechin gallate, Scutellaria Baicalensis Root Extract (and) Acacia Catechu Wood Extract, sorbic acid, Polygonum Cuspidatum Root Extract, Acacia Catechu Extract, dipicolinic acid, squalene, Lonicera Japonica (Honeysuckle) Flower Extract, beta-carotene and combinations thereof.

Abstract: The present invention concerns various cosmetic uses of compositions comprising an essential oil or one of its constituents, preferably a major constituent, in the targeted treatment and prevention of benign keratoses, and more particularly keratoses induced by solar radiation on the skin of a subject. More particularly, the present invention concerns compositions based on the essential oil of oregano or of rosewood, or on linalool, thymol or carvacrol. The present invention also concerns therapeutic applications of a composition as described in the prevention or targeted treatment of actinic keratoses, essentially for prophylactic purposes.

Abstract: The present invention concerns various cosmetic uses of compositions comprising an essential oil or one of its constituents, preferably a major constituent, in the targeted treatment and prevention of benign keratoses, and more particularly keratoses induced by solar radiation on the skin of a subject. More particularly, the present invention concerns compositions based on the essential oil of oregano or of rosewood, or on linalool, thymol or carvacrol. The present invention also concerns therapeutic applications of a composition as described in the prevention or targeted treatment of actinic keratoses, essentially for prophylactic purposes.

Abstract: The present invention concerns various compositions comprising the essential oil of Origanum compactum or of Aniba rosaeodora or one of their constituents, preferably a major constituent, for use in the targeted treatment and prevention of keratoses in the transformation phase and of carcinomas originating from these keratoses, and more particularly of keratoses induced by solar radiation on the skin of a subject. More particularly, the present invention concerns compositions based on the essential oil of oregano or of rosewood, or on linalool, thymol or carvacrol.

Abstract: A cosmetic regime or regimen for depigmenting, lightening and/or bleaching keratin materials, especially the skin, entails topically applying thereon a cosmetic composition containing a dithiolane compound of formula (I): in which: Y is O, NR1 or S R1 is a hydrogen atom; a C1-C20 alkyl radical or an optionally substituted phenyl radical; R is a hydrogen atom; or a C1-C20 alkyl radical, or an optionally substituted phenyl radical, or a C1-C8 alkyl radical containing an optionally substituted phenyl substituent; n=0 or 1 or 2; and also the salts, chelates, solvates and optical isomers thereof.

Abstract: Dithiolane compounds having the structural formula (I): are useful for reinforcing and/or preserving the natural antioxidant protection of the skin against oxidative stress caused, especially, by UV radiation, e.g., by increasing the level of intracellular glutathione.

Abstract: The present invention concerns various compositions comprising the essential oil of Origanum compactum or of Aniba rosaeodora or one of their constituents, preferably a major constituent, for use in the targeted treatment and prevention of keratoses in the transformation phase and of carcinomas originating from these keratoses, and more particularly of keratoses induced by solar radiation on the skin of a subject. More particularly, the present invention concerns compositions based on the essential oil of oregano or of rosewood, or on linalool, thymol or carvacrol.

Abstract: A cosmetic composition for depigmenting or bleaching mammalian skin or both, which contains:a) an amount of L-2-oxothiazolidine-4-carboxylic acid effective to depigment or bleach mammalian skin or both, andb) a topically-acceptable carrier.

Abstract: Human skin is depigmented or bleached by applying thereto a compound of formula (1): ##STR1## wherein X represents COOH or the ring: ##STR2## wherein Z.sub.1, Z.sub.2 and Z.sub.3, independently of each other, are H, OR or R, R representing an optionally substituted saturated or unsaturated, linear or branched C.sub.4 -C.sub.8 -alkyl radical, or a salt, a metal complex or an ester of the compound.

Abstract: Human skin is depigmented or bleached by applying thereto a compound of formula (1): ##STR1## wherein X represents COOH or the ring: ##STR2## wherein Z.sub.1, Z.sub.2 and Z.sub.3, independently of each other, are H, OR or R, R representing an optionally substituted saturated or unsaturated, linear or branched C.sub.1 -C.sub.8 -alkyl radical, or a salt, a metal complex or an ester of the compound.

Abstract: Novel 5,6-dihydroxyindole polymers, which are soluble in an aqueous or aqueous-alcoholic medium and a process for the preparation of these polymers and to compositions containing these polymers, especially cosmetic compositions.

Abstract: Process for the preparation of a melanic pigment of small particle size and its use in cosmetics. The subject of the present invention is a process for the preparation of a melanic pigment of very small particle size in which 100% of the particles have a particle size smaller than 1.mu.m, consisting in dissolving a melanin of natural and/or synthetic origin in an aqueous medium containing at least one alkalifying agent and/or at least one sequestering agent, and in precipitating the melanin thus dissolved by addition of at least one alkaline-earth metal salt. Another subject of the invention is the use of this pigment in compositions for cosmetic treatments and for dyeing hair.

Abstract: Novel 5,6-dihydroxyindole polymers, which are soluble in an aqueous or aqueous-alcoholic medium and a process for the preparation of these polymers and to compositions containing these polymers, especially cosmetic compositions.