Barrier Lipid ComplexEpidermal lipids are an essential part of the skins stratum corneum. Therefore the most effective lipids for maintaining skin health are those most identical to the epidermal lipids: ceramides, cholesterol and fatty acids. These lipids also make up about 50% of cell membranes, and can be damaged due to a process called lipid peroxidation, as well as exposure to internal and external stressors. Intercellular lipid damage compromises barrier function,