Emulsion in water - - oil without preservative, and its method of manufacture and its utilisaiton in the fields, and dermatological composition

摘要

The invention relates to an emulsion comprising an aqueous phase dispersed in an oily phase, characterized in that it is free of preservatives and in that the cells of the aqueous phase have an average size of less than or equal to 0, 22 microns. The present invention also relates to the use of the said emulsion in the cosmetic and / or dermatological composition, in particular for the treatment, the protection, the care and / or cleaning the skin, mucous membranes and / or the hair, and / or for making up the skin and / or mucous membranes. The present invention also relates to a process for the preparation of a water - to - oil comprising an aqueous phase dispersed in an oily phase, the cells of the aqueous phase with a mean size of less than 0, 22 microns, which consists in introducing, under pressure, the aqueous phase into the oily phase, through a microporous membrane having a mean pore size ranging from 0, 01 to 0, 3 m to a pressure close to the critical pressure.