[DEEP HYDRATION]: Bio-Collagen Real Deep Mask has a moisturizing effect that is superior to that of regular hyaluronic acid. It quickly hydrates the skin's surface and penetrates deeper layers of skin resulting in a healthy and moisturized complexion. [A 28g REAL COLLAGEN MASK]: 500 Da molecular collagen absorbs into the skin easily that is superior to that of regular collagen, ensuring thorough absorption and maximum effectiveness. [HYPOALLERGENIC]: This deep hydrating facial mask is formulated with non-toxic & non-irritant ingredients. It is free of allergic reaction-causing ingredients and 19 other harsh, controversial ingredients. It is completely safe for sensitive skin. [OVERNIGHT MASK SHEET]: After 3 hours, the collagen hydrogel mask sheet is absorbed into the skin, becomes transparent. This mask can be used as an overnight mask, providing easy elasticity care while you sleep.