The Ingredient: benzoyl peroxide

Zeichner says that this is best for banishing "red, angry acne." "It is a myth that Hispanic patients should avoid it," he says. "It is commonly used across all skin types." It works by killing acne-causing bacteria, but it can bleach fabrics (In other words, make sure you're not sleeping on a fancy pillowcase while you're using it.).

Another word of caution: Benzoyl peroxide is a powerful ingredient, so make sure you're applying moisturizer and keeping your skin hydrated. Drying out your face isn't going to get rid of your acne, it's going to make it worse. Plus, Zeichner says that skin irritation from medications can also lead to dark spots -- more reason to keep your skin hydrated.

Try:

Dermalogica Clear Start Breakout Clearing Emergency Spot Fix: One of our editors may or may not keep this treatment in her purse, in case disaster strikes. Its potent benzoyl peroxide formula zaps pimples quickly and effectively, and soothing lavender helps balance skin irritation.

Clearogen Benzoyl Peroxide Acne Lotion: This benzoyl peroxide lotion also has a blend of fatty acids to regulate oil production and green tea to nourish skin and help protect it from free radicals.