Patent ID: 6500446
Filing Date: 2002-12-31
Classification: A01N,A61K,A61Q,B82Y

Abstract:
A composition for skin treatment, comprising:a) a pharmaceutically or cosmetically acceptable medium b) dispersed directly within the medium, 0.001 to 5% by weight of the composition of at least one cationic polymer selected from the group consisting of cationic polysaccharides; and c) dispersed within the medium, 0.5 to 50% by weight of the composition of microparticles or nanoparticles containing at least one biologically active molecule therein selected from the group consisting of an antiseptic, an antibiotic, an antiviral, an antifungal, an antiparasitic, an insecticidal, an acaricidal and an antimitotic for treating the skin, said microparticles or nanoparticles being approximately spherical multilamellar vesicles of onion structure, whereby the combination of the at least one cationic polymer and the microparticles or nanoparticles improves the activity of the at least one active molecule.