Benzoyl peroxide directly combats acne-causing bacteria, Cutibacterium acnes (formerly Propionibacterium acnes). It achieves this by releasing free radicals that destroy bacterial cell walls, preventing further inflammation and breakouts. Studies show concentrations between 2.5% and 10% are generally effective for mild to moderate acne. Higher concentrations might be more effective but also increase the risk of skin irritation.
Choosing the Right Concentration
A 5% concentration is a good starting point for many people. If you experience irritation, try a lower concentration like 2.5%. Conversely, if your acne isn’t responding, consider upgrading to a 10% formulation, but always monitor your skin’s reaction. Always follow product instructions carefully. Remember, consistency is key; daily use is usually recommended for optimal results. Visible improvement usually takes several weeks, so patience is needed.
Beyond Bacteria: Additional Benefits
Beyond its antibacterial action, benzoyl peroxide also helps exfoliate the skin. This removes dead skin cells that can clog pores, contributing to acne formation. This dual action–fighting bacteria and unclogging pores–makes it a powerful acne treatment.
