COSRX Master Patch X-Large is a specialized hydrocolloid patch designed for treating larger areas of skin concerns. Each pack contains 10 extra-large patches that provide effective coverage and protection while maintaining optimal skin moisture levels. As this is a personal care/hygienic product, key features are not listed for safety reasons. The patches should be applied to clean, dry skin. The hydrocolloid material helps create an optimal healing environment by protecting the area and maintaining moisture. Contains 10 extra-large patches per package.