Ceramides are key to maintaining the moisture and protective barrier of the skin surface to keep the skin renewed. They increase moisture and hydration in dry skin, renew, repair and firm aging skin, and reduce dryness, lines, and wrinkles.
Present in high concentrations within cellular membranes, ceramides are one of the components of sphingomyelin, one of the major lipids of the lipid bilayer, which is credited with providing structural support to cells and improving cellular integrity.
Ceramides are also thought to increase collagen production in the skin. This increase in collagen production goes hand in hand with ceramides’ ability to increase cellular turnover, keeping the skin fresh and youthful.
Dry, irritated, and sensitive skin often lack ceramides. As a result, the skin’s protective barrier is compromised. When this happens, the skin becomes susceptible to environmental factors, changes of weather, and irritants. By adding ceramides to the skin, the skin’s barrier is strengthened, which can help prevent things like transepidermal water loss. Ceramide is recognized for reinforcing and protecting the skin from trans-epidermal water loss (TEWL), and may also help improve epidermal integrity while providing protection from photo damage, surfactants, stress, and low humidity conditions. Providing linoleic acid, an essential building block of ceramides, can also help the skin.