These breathable hydrocolloid patches are infused with salicylic acid, a hydroxy acid that dissolves excess sebum to clear out pores. The hydrocolloid patch gently absorbs oil, pus, and gunk from the pimple while protecting the wound from bacteria. Overnight, your pimple will go down in size. To use, simply stick one onto a pimple after cleansing your face and leave it on overnight. You can also wear these during the day.