When dealing with acne, you'll probably try anything and everything to get it under control. That includes testing out product after product and treatment after treatment. We already know about some

acne fighters, like salicylic acid and retinol, but we shouldn't forget about benzoyl peroxide—it's a powerhouse when it comes to keeping pimples at bay.

"Benzoyl peroxide (BPO) is a peroxide with antibacterial, irritant, keratolytic, anti-inflammatory, and comedolytic properties," explains Corey L. Hartman, MD, FAAD, founder of Skin Wellness Dermatology. "It is a mainstay of acne therapy and has been a part of dermatologic care for decades. BPO reduces acne-causing bacteria and improves inflammation associated with acne flares. It is available over-the-counter and comes in strengths ranging from 4% to 10%."