Benzoyl Peroxide
What is Benzoyl Peroxide?
Benzoyl peroxide is the antibacterial demolition expert in skincare—a powerful oxidizing agent that releases oxygen upon contact with skin, creating an environment where acne-causing bacteria simply cannot survive. This crystalline powder penetrates pores and releases reactive oxygen species that destroy P. acnes bacteria while simultaneously helping to dissolve the excess sebum and dead skin cells that contribute to breakouts. Think of it as a specialized SWAT team that targets only the troublemakers without harming innocent bystanders. It's the skincare equivalent of a controlled explosion that precisely clears out unwanted elements to make way for healthy new growth. For those battling inflammatory acne that hasn't responded to gentler approaches, benzoyl peroxide offers unmatched antibacterial power with the scientific evidence to back its reputation as the most effective over-the-counter acne treatment available.
Perfect For
Oily: Highly beneficial - helps regulate sebum production and reduces breakouts
Dry: Neutral effect on dry skin
Sensitive: Neutral effect on sensitive skin
Combination: Depends on specific formulation and application technique
Mature: Neutral effect on mature skin
Key Benefits
Core Competencies
Ingredient Interactions
Works well with: gentle hydrators, niacinamide, zinc
Avoid combining with: retinoids, vitamin c, peptides, vitamin e
Notes: Powerful oxidizing agent that can deactivate other actives; use at different times of day from incompatible ingredients
References
Strength: Strong - Multiple clinical trials
Key Studies:
• Kawashima M, et al. Journal of Dermatology (2017): Study on efficacy for acne vulgaris
• Fakhouri T, et al. Journal of Drugs in Dermatology (2010): Research on combination therapies
• Mills OH, et al. Journal of the American Academy of Dermatology (1986): Study on concentration efficacy
Mechanisms:
• Releases oxygen free radicals that destroy P. acnes bacteria
• Keratolytic effect unclogs pores
• Anti-inflammatory properties reduce redness
• Sebostatic effect reduces sebum production