CeraVe Hydrating Hyaluronic Acid Serum is a dermatologist-developed facial serum that provides up to 24 hours of hydration. Formulated with hyaluronic acid, three essential ceramides, and vitamin B5, this serum helps bind moisture to the skin's surface while strengthening its natural protective barrier. The serum features MVE® Delivery Technology for continuous release of moisturizing ingredients throughout the day. It can be used alone or layered under moisturizer for enhanced hydration. The non-comedogenic, fragrance-free formula is suitable for all skin types, including sensitive skin. Clinical testing showed that 90% of users experienced intense hydration immediately, while 98% reported smoother skin after 4 weeks of use.