Benzac AC? contains benzoyl peroxide, a topical antibacterial and keratolytic agent used in the treatment of acne vulgaris. It works by releasing oxygen free radicals that kill acne-causing bacteria on the skin. Benzoyl peroxide also reduces excess oil production and promotes peeling of the outer skin layers, preventing clogged pores. Regular use helps reduce both inflammatory and non-inflammatory acne lesions and minimizes the risk of antibiotic resistance.