The Cetaphil Optimal Hydration 48H Activation Serum is a scientifically-backed, Dermatologist Recommended formula providing Non-stop 48H Hydration to revitalize sensitive skin. This serum utilizes the exclusive HydroSensitiv™ Complex and Hyaluronic Acid to instantly boost moisture and lock it in deeply, addressing the 5 Signs of sensitive skin. The formula contains Panthenol and Tocopherol (Vitamin E) to support the skin barrier, enhance hydration, and provide essential protection. With its intense moisture boost and clinically proven formulation, this Optimal Hydration serum leaves skin feeling revitalized, soothed, and noticeably softer. Invest in this targeted serum for sustained deep hydration and barrier support.