Multi-action blemish patches made with 420-micron hydrocolloid technology, which forms a protective barrier over the spot and absorbs impurities. The brand says they visibly reduce the size, redness and visibility of blemishes from 3 hours of wear. Each pack holds 22 patches in two sizes (10 medium and 12 small), made to stay in place day or night. Dermatologically tested on oily, acne-prone skin.