Ceramides are fats or lipids that make up a large portion of your epidermis, or the outer layer of your skin. Ceramides help replenish your skin barrier and lock in moisture, protecting your skin.  As we age, we can't replenish our natural ceramides as quickly, and therefore turn to moisturizers, serums and other skincare products to help restore our ceramide levels. Discover our bestselling products created with ceramides.