Skin naturally contains ceramides. Over time, ceramides become depleted, leading to dry and irritated skin. CeraVe helps replenish the vital ceramides healthy skin needs. It's formulated with a unique combination of three ceramides (called 1, 3, and 6-II). Only CeraVe delivers ceramides through a patented, controlled-release technology that penetrates the skin's surface, to help rebuild the skin's protective barrier and lock in moisture all day.