COSRX Clear Fit Master Patch is an ultra-thin hydrocolloid acne patch designed for daytime use. Each pack contains 18 patches with a matt, gradient finish that makes them nearly invisible under makeup while effectively treating breakouts and protecting problem areas. The patches are made with hydrocolloid material (Somadermspot-S) that helps extract impurities while maintaining a moist environment for faster healing. They act as a protective barrier against bacteria and secondary infection. The patches should be applied to clean, dry skin before other skincare products. Key ingredients include petroleum resin, cellulose gum, styrene isoprene styrene block copolymer, polyurethane film, polyisobutylene, liquid paraffin, and tetrakis methane.