Hydrated lamellar phases or liposomes which contain a fatty monoamine or a cationic polymer which promotes intracellular penetration, and a cosmetic or pharmaceutical composition containing same, as well as a method of screening such a substance
The invention relates to novel hydrated lamellar phases or liposomes which contain either polyethylenimine, or a substance which stimulates intracellular penetration selected from the group consisting of:i) a fatty monoamine of carbon-containing chain length of between C10 and C18；ii) a cationic polymer,optionally at least one fluorescent compound which is essentially inert with respect to the intracellular penetration, which enables this penetration to be visualised.These liposomes are very useful in cosmetics or in pharmacy for stimulating the intracellular penetration of a substance or active principle.
