Capsulis

Corinne Degert

Didier Roux

Rene Laversanne

Philippe Poulin

Ren&eacute; Laversanne

René Laversanne

Stéphane Ugazio

Stephane Ugazio

The invention concerns novel media in the form of complex dispersions, method for preparing same and their uses. Said media consist of a first medium in the form of droplets wherein is dispersed a phase containing organized double layers of surfactants, preferably in the form of multilamellar vesicles, said droplets being in emulsion in a second medium called continuous phase non-miscible with the first medium. Said media can be used as base for cosmetic compositions. They can contain active principles, in particular for controlling their release and/or protecting and/or controlling their pH. They can also be used to make polymer microspheres containing an active principle. They are also useful as antigen vector.

Media in the form of complex dispersions, method for preparing same and uses

Method of making a product adhere to a surface, in which a composition is brought into contact with the surface, the composition containing the product incorporated in substantially spherical, multilamellar vesicles, with a diameter of between 0.1 and 100 &mgr;m, and including concentric membranes based on at least one surfactant and separated by a solvent medium. Each of the vesicles has an onion-like structure formed of a succession of concentric bi-layers extending from each vesicle center to its periphery, and containing therein at least one cationic agent, resulting in the vesicles carrying a positive overall charge.

Method for making a product adhere to a surface

Process for the preparation of liposomes without the use of an organic

Active principle carriers containing non-ionic surfactants, and uses

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Saint Medard en Jalles, France

Corinne Degert