Hydrating Activation Serum: Quench your skin's thirst with lightweight, fast absorbing Cetaphil Optimal Hydration Activation Serum for an effortlessly refreshed and radiant skin. Active Ingredients: An innovative combination of Blue Daisy extract, vitamin E and B5 to amplify moisture retention in your dry, sensitive, and dehydrated skin Hyaluronic Acid: A versatile ingredient that strengthens the moisture barrier and enhances skin texture by providing immediate hydration Hydrosensitive complex: Boost your skin’s water by 50% with soothing “HydroSensitiv Complex” providing long-lasting hydration Dermatologist recommended for sensitive skin: Recommended by dermatologists worldwide for improving the overall quality of sensitive skin Boost hydration: Delivers a complimentary hydration effect when used with the Cetaphil Optimal Hydration Daily Cream