Benzoyl peroxide
If breakouts are your thing, this is the ingredient dermatologists reach for first. It knocks down the bacteria that make pimples angry. Money-saving fact: 2.5% works about as well as 10% in studies, with a lot less irritation. Use a thin layer over the whole breakout-prone area (not just one pimple) and give it 6-8 weeks. Heads up: it bleaches fabric, so use white towels and pillowcases.
what the evidence says
Strong recommendation in the AAD 2024 acne guidelines; FDA OTC monograph ingredient; 2.5% shown as effective as 10% with fewer side effects.
can you use it with…
- AdapaleneGreat together
The power duo, officially
Same face, different shifts
- Topical antibiotics (clindamycin)Great together
Made for each other, literally
- Tea tree oilCareful
Double the drying, not the results
- Salicylic acidCareful
One treatment at a time
- NiacinamideGreat together
The treatment and its cooldown
- SulfurCareful
Two dryers, one face
sources
- 1.American Academy of Dermatology · Guidelines of care for the management of acne vulgaris (2024)
- 2.International Journal of Dermatology · Comparing 2.5%, 5%, and 10% benzoyl peroxide on inflammatory acne vulgaris (1986)
- 3.U.S. Food and Drug Administration · 21 CFR § 333.310 — Topical acne drug products for over-the-counter human use: active ingredients (2024)
- 4.American Academy of Pediatrics · Teen Acne: How to Treat & Prevent This Common Skin Condition (2025)
- 5.American Academy of Dermatology · 9 things to try when acne won't clear (2026)
note:Skinformed is general education, not medical advice. It doesn't know your skin, can't diagnose anything, and is no substitute for a clinician. If something on your skin hurts, spreads, or worries you, that's a doctor visit, not a product search.