Description Now in a biodegradable fabric, Neutrogena Hydro Boost Hydrating Mask is clinically proven to provide instant hydration that lasts for 12 hours so skin looks hydrated, radiant and glowing. Our innovative progressive release technology effectively replenishes and retains hydration. After the mask is removed the concentrated formula works beneath the skin to continuously hydrate throughout the night. Infused with Purified Hyaluronic Acid to constantly deliver moisture to the skin and lock in hydration from within, and Anti-oxidant Olive extract to leave the skin looking smooth and soft. The plant-based fabric has 25% more retention of essence (vs old fabric) and provides 4x more Hyaluronic Acid than our Hydro Boost Serum for an intensified moisture boost*. With a unique fabric contour design, created to stretch and closely hug your facial contours.