The COSRX Clear Fit Master Patch (18 patches) contains the following ingredients: Cellulose Gum, Styrene Isoprene Styrene Block Copolymer, Polyisobutylene, Petroleum Resin, Polyurethane Film, Liquid Paraffin, and Tetrakis Methane. These patches are designed to be ultra-thin and are made of hydrocolloid material, which helps to absorb impurities and speed up the healing process