The PCA Skin Hydrating Serum works to boost moisture levels in the skin while decreasing inflammation for an overall supple, plump look and feel. The serum is formulated with Sodium Hyaluronate, an ingredient that holds 1,000 times its weight in water and plays a huge role in skin hydration, Glycerin, an ingredient that holds moisture in the skin for exceptional hydration, and Sodium PCA, an ingredient that holds 250 times its weight in water, leaving the skin supple and smooth. The combined blend of antioxidants and moisturizing ingredients leaves the skin soft, plump and hydrated. The serum has a weightless feel, making it ideal to wear throughout the day. Serum is perfect for those with dry, sensitive skin.