Abstract: The present invention relates to novel C-glycoside compounds of given absolute configuration, to a process for synthesising them and to compositions containing them. The invention also relates to the cosmetic use of these C-glycoside compounds as agents to stimulate the synthesis of glycosaminoglycans containing a D-glucosamine and/or N-acetyl-D-glucosamine residue, advantageously hyaluronic acid, and/or of proteoglycans, advantageously proteoglycans containing hyaluronic acid, by fibroblasts and/or keratinocytes. The invention also relates to a cosmetic process for treating keratin materials using a composition containing at least one C-glycoside compound according to the invention.

Abstract: Agents for inducing and/or stimulating the growth of human keratin fibers and/or preventing their loss and/or increasing their density include at least one 4-aminopiperidine compound of formula (I):

Abstract: The present invention relates to a cosmetic process for treating wrinkled skin, in particular the skin of the face and/or of the forehead, through a dermo-decontracting effect, comprising the topical application to said skin of a composition comprising, in a physiologically acceptable medium, at least one piperidine derivative chosen from the compounds of formula (I). These compounds make it possible to combat expression wrinkles according to a mechanism of dermo-decontraction.

Abstract: Agents for inducing and/or stimulating the growth of human keratin fibers and/or preventing their loss and/or increasing their density include at least one 4-aminopiperidine compound of formula (I): in which: Alk1 and Alk2 are each, independently of one another, a linear saturated C1-C10 or unsaturated C2-C10, or branched C3-C10 saturated or unsaturated, alkylene radical (divalent radical); Ph1 and Ph2 are each, independently of one another, a phenyl group optionally substituted with one or more radicals, which may be identical or different, selected from among —F, —CF3, —R1, —OR1 and —NR1R2; R1, R2 and R3 are each, independently of one another, a linear saturated C1-C7 or unsaturated C2-C7, or branched or cyclic C3-C7 alkyl radical; or a salt, optical isomer or solvate thereof.

Abstract: The present invention relates to the cosmetic use of at least one 4-aminopiperidine compound of formula (I) in which: Alk1 and Alk2 denote a C1-C10 alkylene radical; Ar1 denotes a phenyl group optionally substituted with one or more radicals, which may be identical or different, chosen from —F, —CF3, —R1, —OR1, —NR1R2; Ar2 denotes a phenyl group optionally substituted with one or more radicals, which may be identical or different, chosen from —F, —CF3, —NR1R2; R denotes a hydrogen atom or a C1-C10 alkyl radical; R1 and R2 denoting a C1-C7 alkyl radical; and the salts, optical isomers and solvates thereof, as an agent for combating wrinkles, especially expression wrinkles, and/or for decontracting the skin and/or relaxing the features. The invention also relates to a cosmetic composition containing such a compound and to the corresponding novel compounds.

Abstract: A composition, suitable for topical application to the skin, containing at least one benzoisothiazolone of formula (I): Novel benzoisothiazolones of formula (I) and a method of caring for dry and/or mature skin.

Abstract: The present invention relates to a composition containing at least one piperazine compound of formula: and to a process for treating wrinkled skin, etc. Two novel families of piperazine compounds are also described.

Abstract: The present invention relates to a process for treating human keratin fibers and/or the skin from which the said fibers emerge, in order to induce and/or stimulate the growth of the human keratin fibers and/or to stop their loss and/or to increase their density, comprising at least the application, to the human keratin fibers and/or the skin, of a cosmetic composition comprising an effective amount of at least one piperidine derivative of general formula (I), in which: R1 denotes a halogen or a radical chosen from a linear or branched C1-C6 alkyl radical, a group OR, a group NRR?, a CF3 group, a group NHCOR or a group CONRR?; R2 denotes a linear or branched C1-C20 alkyl or alkenyl radical, the hydrocarbon-based chain of which may be optionally interrupted with a —CO— function optionally substituted with at least one group OR, COOR, NRR?, NHCOR or CONRR? and/or with a phenyl group optionally substituted with one or more radicals R1; with R and R? denoting, independently of each other, a hydrogen atom

Abstract: A composition, suitable for topical application to the skin, containing at least one benzoisothiazolone of formula (I): Novel benzoisothiazolones of formula (I) and a method of caring for dry and/or mature skin.

Abstract: Methods of improving the appearance of keratinous substances using at least one DHEA derivative such as the skin, hair, eyelashes and/or nails, in particular for preventing or treating cutaneous signs of ageing and/or a faded complexion and/or disorders of pigmentation of the skin or hair and/or drying of the skin and/or hyperseborrhoea and/or imperfections relating to hyperseborrhoea and/or sensitive skin and/or dandruff and/or hair loss and/or canities.

Abstract: The present invention relates to novel C-glycoside compounds of given absolute configuration, to a process for synthesising them and to compositions containing them. The invention also relates to the cosmetic use of these C-glycoside compounds as agents to stimulate the synthesis of glycosaminoglycans containing a D-glucosamine and/or N-acetyl-D-glucosamine residue, advantageously hyaluronic acid, and/or of proteoglycans, advantageously proteoglycans containing hyaluronic acid, by fibroblasts and/or keratinocytes. The invention also relates to a cosmetic process for treating keratin materials using a composition containing at least one C-glycoside compound according to the invention.

Abstract: The invention relates to new processes for preparing 7alpha-hydroxy-dehydroepiandrosterone of formula (1):

Abstract: 7-Oxo-DHEA derivatives, various of which are themselves novel compounds, are well suited for cosmetically/therapeutically treating adverse conditions/afflictions of a keratinous substrate/material, notably of human skin, hair, eyelashes and nails, to improve the appearance thereof, in particular to prevent or treat signs of aging of the skin and/or a dull complexion and/or skin or hair pigmentation disorders and/or dryness of the skin and/or hyperseborrhoea and/or hyperseborrhoea-related imperfections and/or sensitive skin and/or dandruff and/or natural hair loss and/or baldness.

Abstract: 7-Oxo-DHEA derivatives, various of which are themselves novel compounds, are well suited for cosmetically/therapeutically treating adverse conditions/afflictions of a keratinous substrate/material, notably of human skin, hair, eyelashes and nails, to improve the appearance thereof, in particular to prevent or treat signs of aging of the skin and/or a dull complexion and/or skin or hair pigmentation disorders and/or dryness of the skin and/or hyperseborrhoea and/or hyperseborrhoea-related imperfections and/or sensitive skin and/or dandruff and/or natural hair loss and/or baldness.

Abstract: The present invention relates to a composition suitable for topical application to the skin, containing, in a physiologically acceptable medium, at least one carbonyl amine of formula (I): It also relates to the cosmetic use of this compound, especially for preventing or combating the signs of skin ageing, especially for relaxing the lines of the face and/or for smoothing out wrinkles, in particular expression wrinkles.

Abstract: The present invention relates to compositions that are suitable for topical application to the skin or the scalp, containing, in a physiologically acceptable medium, at least one compound of a given formula. The invention also relates to a cosmetic treatment process comprising the topical application of these compositions and also to novel C-glycoside derivatives.

Abstract: The present invention relates to the use of ascorbic acid compounds, especially esters, alone or in a composition, preferably a cosmetic composition, to, e.g., bleach human skin, head hair or other hairs, protect against tanning, and/or reverse the effects of tanning.

Abstract: The present invention relates to a cosmetic process for treating dry skin or a dry scalp by the topical application to the skin or the scalp of a composition containing, in a physiologically acceptable medium, at least one of 5-cholesten-3&bgr;,25-diol-7-one and esters and ethers thereof.

Abstract: The invention relates to new processes for preparing 7alpha-hydroxy-dehydroepiandrosterone of formula (1): 1

Abstract: The present invention relates to a cosmetic process for treating wrinkled skin, by topical application to the skin of a composition containing, in a physiologically acceptable medium, at least one secondary or tertiary carbonyl amine of formula (I): 1