| abstract |
Cosmetic or dermatological formulation with an active substance for the protection or treatment of the skin and / or hair, and with a vehicle material in the or to which the active substance is fixed, or with which the substance is associated active, the vehicle material having a certain proportion of chitosan and a certain proportion of a polylactide, a polyglycolide and / or a poly (lactide-glycolide) or its derivatives, and the carrier material being presented in the form of particles with a size particle medium of 10 to 1,000 nm. |