Ceramides are molecules that help strengthen the skin's barrier to lock in moisture. If your skin is feeling dry, irritated or sensitive, try this Skin Inc. Ceramide Serum. The serum is encapsulated within patented seaweed capsules which release the ingredients only upon application to the skin. As you rub it into skin, the capsules burst so that the ceramide molecules absorb into skin to create that protective barrier. Blend it with up to two other Skin Inc. customizable Serums to create a powerful multi-acting product, designed to treat your skin's unique needs.