COSRX AC Collection Acne Patch is a hydrocolloid acne treatment patch that helps heal blemishes overnight by absorbing excess fluid and creating a protective barrier. Each package contains 26 clear, ultra-thin patches designed to effectively treat acne spots. The patches come in multiple sizes to accommodate different types of blemishes. Made with hydrocolloid material, they create an optimal moist environment for healing while protecting the affected area from external contaminants and preventing further irritation. For best results, apply on clean, dry skin and leave on for 8-12 hours or overnight. The patches are hygienic and individually packaged for convenience.