Hydrogen peroxide can dry up acne and prevent new breakouts from happening. Acne -- blemishes, zits or pimples -- are unwanted infections of the skin that can strike individuals of any age or sex. Acne is more common in teenagers and in women who are pregnant, on their menstrual cycle, or starting or stopping birth control pills. One treatment method includes the use of hydrogen peroxide, a common over-the-counter antiseptic that can help to dry out acne by killing bacteria on the skin.