BP 5% Acne Wash is an advanced, medical-grade Benzoyl Peroxide cleanser that helps to unclog pores, kill acne-causing bacteria, and prevent future blemishes from forming. Benzoyl Peroxide Bar, Wash, or Creamy Wash. Benzoyl peroxide topical wash is a medication that treats mild to moderate acne. You can use this topical wash to clean affected areas of your skin. Avoid using this product on sensitive areas of your skin, including your eyes, nose and mouth. Benzoyl peroxide (BPO) has been an important component of topical therapy for acne vulgaris for more than five decades due to its ability to markedly reduce Propionibacterium acnes and inflammatory acne lesions and its ability to moderately reduce noninflammatory acne lesions.