A collagen-packed facial sheet mask contains water-soluble collagen to regulate sebum balance & treat keratin. It adheres to skin perfectly allowing serum to be absorbed thoroughly and skin appears firmer, softer, more elastic & translucent How to Use Prepare skin with toner after washing face. Spread sheet mask evenly over your face. Leave it on your face for 15-20 minutes. Remove mask and gently pat your face to absorb essence. Use 2-3 times per week.