Starface Salicylic Acid Hydro-Star Pimple Patches, a pack of 32 cute, starry hydrocolloid pimple protectors made with 1% Salicylic Acid called Salicylic Star or Sal Acid Star for short from Starface. A well-known beta-hydroxy acid (BHA), Salicylic Acid helps to dissolve dead skin.