COSRX Acne Pimple Master Patch is an acne treatment that treats acne for what it really is, an infected wound. These little pimple patches are an overnight fixer to make whiteheads, blackheads and picked zits disappear by morning. The thin clear hydrocolloid patch feels similar to a hydrogel sheet mask in texture, adhering your skin strongly. It'll stay on through showering and washing. It treats breakouts by eliminating infection and bacteria, which is what causes them in the first place. It's able to breakdown debris from blackheads and absorb gunk from whiteheads overnight, so you won't experience a harsh dry patch from using this. It even helps flatten and heal cystic acne faster. Comes in pack of 24-pieces.