Liposomes are invisible spherical bodies similar to biological cells. Like the natural cell membranes of plants and animals, liposomes consist of a so-called bilayer with phosphatidylcholine as its natural main component.
The bilayers of liposomes are very similar to the different layers of the skin barrier. Thus, liposomes merge easily with those barrier layers. Consequently, the penetration capacity of the skin for cosmetic and dermatologically active substances is improved. Active agents transported in liposomes penetrate easily and spread well within the skin. They are retained by the skin in a depot-like manner and so often act with stronger effects.