Lecithen

Lecithin has the ability to soften and soothe the skin, it contains a high concentration of fatty acids which create a barrier on the skin that effectively seals moisture in while keeping air and other environmental elements out. 

Lecithin has the ability to transfer other beneficial ingredients past your skins natural barriers. Lecithin contains phospholipids which form liposomes, which are effective in delivering other ingredients inside their spherical structure and penetrating through the skin barrier.