The main functions of hydrating mask are: hydrating. The skin problem caused by lack of water is not so simple as dryness. Almost every skin problem is related to hydration and maintenance. Moisture is the first element of skin beauty, and whitening, sun protection and oil control are all done on the basis of hydrating and moisturizing. No matter what season, age, skin quality and skin problems, the hydrating mask can be perfect in soothing and moisturizing water.