HYDRO-STAR + SALICYLIC ACID 16CT. Benefits: Salicylic acid, a well-known beta hydroxy acid (BHA), helps visibly shrink and soothe spots by dissolving dead skin cells and unclogging pores.. Hydro-Star + Salicylic Acid Patches are perfect for spots that need something more powerful. Because hydrocolloid and salicylic acid work together to dissolve dead skin cells and absorb fluid, deep spots might like these stars best.. These blue stars protect your spots from outside bacteria and serve as a gentle reminder to avoid skin picking.. Dermatologist tested, and safe for every skin type, including sensitive.. Features: Perfectly shaped to grip the contours of the face, Hydro-Stars are designed to really stick and keep you feeling cute while caring for your skin.. Their little arms are great for reaching spots in tight or awkward spaces, like the corner of your nose or side of your lip.. Take your stars everywhere you go with Big Blue, a reusable, mirrored compact (sold separately) that holds your patches for easy application and storage. Key Ingredients: Salicylic acid is a powerful exfoliant that helps unclog pores by cutting through oil, gunk, and dead skin cells.. Hydrocolloid is clinically proven to improve the appearance of pimples overnight: It draws out fluid, which can help soothe redness and inflammation..