Cosmate®CER,Ceramides are waxy lipid molecules (fatty acids), Ceramides are found in the outer layers of the skin and play a vital role ensuring there are the correct amount of lipids that are lost throughout the day after the skin is exposed to environmental aggressors.Cosmate®CER Ceramides are naturally occurring lipids in the human body. They are essential to the skin’s health as they form the skin’s barrier which protects it from damage, bacteria and water loss.