The COSRX Clear Fit Master Patch extracts impurities and forms a protective barrier against bacteria and viruses. The patches are made of clear hydrocolloid material that acts like a hydrogel and adheres firmly to the skin. They promote wound healing in a moist environment and are ideal for daily use under makeup. Helps with pimples and acne. Suitable for blemished skin. 18 patches (10mm x 18ea)