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. Water soluble active agents transported with the help of liposomes spread easily on the skin, where they act as depots and frequently show higher effectiveness. Additionally, those active agents, which are not encapsulated, but simultaneously applied with liposomes, generally are more effective.
Even empty liposomes, i.e. liposomes not containing encapsulated active agents are a highly effective active agent for blemished skin, minor forms of acne, scaly skin and malfunctions of the horny layer caused by deficiency of essential fatty acids, e.g. linoleic acid.