Use daily for instant hydration. Use it mid-day to replenish your skins moisture. As a mask : Apply a generous, even layer of product, leave it on for 5 minutes, then remove any residue with a cotton pad. Hyaluronic acid Superficial and deep moisturizing action. Hydraboost Biotechnological reinforcement that enhances the action of hyaluronic acid. Ceramides Strengthen the skin barrier and reduce transepidermal water loss.