Abstract: A composition including a surfactant in an aqueous medium, wherein said surfactant exhibits at least one paracrystalline phase of either a direct type or a cubic type at temperatures varying from 30° C. to 45° C. inclusive.

Abstract: A composition including a surfactant in an aqueous medium, wherein said surfactant exhibits at least one paracrystalline phase of either a direct type or a cubic type at temperatures varying from 30° C. to 45° C. inclusive.

Abstract: A process, composition, and kit for limiting the penetration into the skin and/or the keratinous fibers of at least one cosmetically and/or pharmaceutically active agent present in a base cosmetic and/or pharmaceutical composition for topical application and in particular for reducing the rate of penetration into the skin and/or the keratinous fibers of the active agent(s).

Abstract: The use of oxazolidinone derivatives in a composition for topical application, especially a cosmetic or dermatological composition, in particular as anti-penetrating agents. These derivatives make it possible especially to prevent the penetration of active agents which are compatible with the skin, the hair and/or mucous membranes, and thus to reduce, or even eliminate altogether, the side effects of these active agents without decreasing their efficacy. Thus, the cosmetic or dermatological compositions containing such active agents make it possible to soften the skin, mucous membranes and the hair.

Abstract: Process for obtaining submicronic particles, for example, pigments in the presence of lipidic vesicles having a lamellar structure, starting with at least one precursor of said particles involves preparing a dispersion of vesicles starting with at least one lipid capable of forming the walls of the vesicles and an aqueous phase E intended to be encapsulated in the said vesicles, and optionally an aqueous phase D, intended to form a dispersion medium of the said vesicles, at least one precursor of the said vesicles being dissolved in phase E and/or D, before and/or during and/or after the preparation of the vesicular phase, at least one agent capable of transforming the said precursor(s) into sought after particles being reacted with it (them) after introduction into the preparation medium.

Abstract: A composition comprises in an aqueous dispersion phase, a dispersion of lipid vesicles that encapsulate an aqueous phase. The lipid vesicles are a lipid phase containing an ionic amphiphilic lipid or a nonionic amphiphilic lipid, or a mixture thereof, together with a compound having the formula ##STR1## wherein (a) W represents --CH.sub.2 OH, --COOM or --(CH.sub.2).sub.2 --COOM, wherein M represents H, alkali metal or alkaline earth metal and X, Y, Z and V, each independently, represent hydrogen or hydroxyl, with the proviso that when W represents --CH.sub.2 OH at least one of X, Y, Z or V represents hydroxyl, or (b) W represents --CH.sub.

Abstract: A composition comprises in an aqueous dispersion phase, a dispersion of lipid vesicles that encapsulate an aqueous phase. The lipid vesicles are a lipid phase containing an ionic amphiphilic lipid or a nonionic amphiphilic lipid, or a mixture thereof, together with a compound having the formula ##STR1## represents --CH.sub.2 OH, --COOM or --(CH.sub.2).sub.2 --COOM, wherein M represents H, alkali metal or alkaline earth metal and X, Y, Z and V, each independently, represent hydrogen or hydroxyl, with the proviso that when W represents --CH.sub.2 OH at least one of X, Y, Z or V represents hydroxyl, or (b) W represents --CH.sub.

Abstract: Process for obtaining submicronic particles, for example, pigments in the presence of lipidic vesicles having a lamellar structure, starting with at least one precursor of said particles involves preparing a dispersion of vesicles starting with at least one lipid capable of forming the walls of the vesicles and an aqueous phase E intended to be encapsulated in the said vesicles, and optionally an aqueous phase D, intended to form a dispersion medium of the said vesicles, at least one precursor of the said vesicles being dissolved in phase E and/or D, before and/or during and/or after the preparation of the vesicular phase, at least one agent capable of transforming the said precursor(s) into sought after particles being reacted with it (them) after introduction into the preparation medium.

Abstract: This composition consists in an aqueous dispersion D, lamellar structure lipid vesicles encapsulating an aqueous phase E; it is characterised by the fact that the lipid phase forming the layers of the said vesicles is at least partly made up of a compound as formula (I): ##STR1## wherein R represents a linear saturated on unsaturated hydrocarbonated chain containing 9 to 17 carbon atoms. The compounds (I) have the advantage that they are easily biodegradable and of very low cytotoxicity.

Abstract: The invention concerns the use of an active quantity of nicotinamide adenosine dinucleotide (NAD) and/or its phosphate ester (NADP) by topical application. The NAD and/or the NADP can advantageously be encapsulated in vesicles of lamellar lipidic structure. This composition is usable for the protection of the skin against solar irradiation.