An oil free hydrating serum replenishes moisture and restores radiance for a smoother complexion. Key Components Hyaluronic Acid Vitamin B5 Indication Long lasting hydration How to use Using fingertips, apply 2-3 drops to the entire face, neck, and chest. Avoid the eye area. If using in the morning, apply after a SkinCeuticals vitamin C antioxidant serum and before a SkinCeuticals sunscreen. If using with a retinol at night, apply after retinol application.