Benzoyl peroxide (BPO) is one of the most effective and well-studied over-the-counter (OTC) acne therapies, is generally regarded as safe and effective and is considered as a first-line treatment for acne. Topical BPO monotherapy products for at-home acne treatment have been available for OTC use for more than 30 years and studies have indicated that a low dose of BPO may be an effective approach for treating acne using an OTC product when applied consistently to larger areas of the face due primarily to its effects against acne-causing bacteria.