A luxurious hydrogel mask that revitalizes, firms, and delivers intense hydration.The COSRX 5 PDRN Hyaluronic Acid Vital Hydrating Hydrogel Mask combines 5 types of PDRN and 8 types of hyaluronic acid for visibly smoother, firmer, and more radiant skin, in just one at-home treatment. How to Use: Cleanse the skin and apply toner/serum.Apply the mask and leave on for 2–3 hours, or until it becomes transparent.Remove and massage in the remaining essence. COSRX 5 PDRN Hyaluronic Acid Vital Hydrating Hydrogel Mask 34 g