Absorbs. Heals. Protects. A well-known beta-hydroxy acid (BHA), salicylic acid helps dissolve dead skin cells to unclog pores and treat deeper acne. Hydrocolloid is clinically proven to help absorb fluid and reduce inflammation to shrink pimples overnight. Perfectly shaped to grip the contours of the face, Hydro-Stars are designed to really stick: They shield spots from outside bacteria, which helps them heal faster. Hydro-Stars also help prevent scarring—think of them as a gentle reminder to avoid skin picking.