If you've got a blemish that you want to get rid of, we recommend forgoing the skin-care aisle and instead perusing the vitamin section for Sundown Naturals Tea Tree Oil. A natural oily skin fighter, tea tree oil will do just as good a job as overhyped salicylic acid treatments and will last much longer. Put a little dab of oil on the offending mark and get a good night's sleep. Worst case scenario: You feel smart for not wasting your money like a teen. [$7]