Organogel comprising a hydrophilic oxidation-sensitive compound and its use, particularly in cosmetics

摘要

The composition, in form of emulsion, comprises oil phase, dispersed with the aid of surfactant system in glycerolic phase containing hydrophilic compound sensitive to oxidation. Surfactant system contains at least one surfactant susceptible to form lamellar phase in contact with glycerolic phase and having melting point above or equal to 35 degrees C. Independent claims are also included for 1) the use of composition as claimed as cosmetic product of tonic and/or anti-wrinkle and/or UV- and pollution- protecting gel and/or depigmenter type, or in preparation of such products; 2) process of cosmetic treatment of skin, comprising application of composition as claimed; and 3) process of stabilization of hydrophilic compound sensitive to oxidation, comprising a) introducing surfactant able to form lamellar phase in contact with glycerol and having melting point at least 35 degrees C into glycerol optionally containing glycol(s) and/or water; b) adding hydrophilic compound to obtained mixture; c) incorporating at least one oil into thus formed mixture, to form emulsion; and d) subjecting obtained emulsion to high speed homogenization, at temperature higher by 5 degrees C than the phase transition temperature of surfactant.