Persol Forte is primarily used to treat acne vulgaris (pimples). Because it contains both Benzoyl Peroxide and Sulfur, it works in a few specific ways: Kills Bacteria: Benzoyl peroxide gets deep into the pores to kill P. acnes, the bacteria responsible for inflammatory breakouts. Dries Out Pimples: Sulfur helps absorb excess oil (sebum) and quickly dries out active whiteheads and “juicy“ pimples. Unclogs Pores: It acts as a peeling agent, shedding dead skin cells that plug up your pores and cause blackheads. Reduces Swelling: It helps calm the redness and inflammation associated with angry, cystic bumps.