Hydrates the skin inside, tightens the skin outside. 17 Amino Acid Complex: the core ingredients of WONJIN’s Amino Mask Prescription. Experience your skin changing every day. Air fit sheet – Thin and transparent sheet with excellent air permeability effectively delivers active ingredients to the skin with perfect fit. 100% plant-derived sheet lets the skin breathe comfortably. Synthesize collagen to maintain skin elasticity. Brighten the skin to reduce dark complexion. How to use: Apply Amino up Toner. Apply Lifting Eye Gel. Apply mask and leave on 10-20 minutes. Remove mask and gentle pat remaining serum until fully absorbed.