Benzoyl Peroxide

We've already covered salicylic acid—a great tool for clearing skin—so now we're diving into an equally powerful and important pimple-fighting ingredient: benzoyl peroxide. While salicylic acid exfoliates, benzoyl peroxide actually dries out the skin, potentially eliminating blemishes overnight. But what strength do you need? Which formula is the best? How do you apply it? Read on for answers to all of the above.