Forms and strengths
- 2.5–10% washes, gels, and creams (OTC drug)
- Fixed combinations with adapalene, clindamycin, or tretinoin (Rx)
How to use it
Start with 2.5–5% once daily; washes can be left on for 1–2 minutes before rinsing. Use white towels. Apply retinoid and benzoyl peroxide at different times unless the product is formulated together.
Side effects and cautions
- Dryness and peeling
- Redness and stinging
- Rare allergic contact dermatitis
Can inactivate tretinoin if layered together (adapalene is stable with it). Keep away from hair and colored fabric. Discard old or heat-exposed products.
Regulatory status
OTC drug under FDA's acne monograph at 2.5–10%. In March 2025 FDA reported that more than 90% of tested products had undetectable or very low benzene and recommended a limited number of retail recalls; heat and age raise benzene, so storage matters.
In the trends
The 2024–2025 benzene scare drove a wave of 'throw out your BPO' content; FDA's own testing found the problem concentrated in a few products.
Sources on file
These links support the claims above. Reviewed September 1, 2026. Drug labels link to DailyMed searches so the current label is always one click away.
- U.S. FDA — OTC topical acne drug products: benzoyl peroxide classification (opens in a new tab)
- U.S. FDA — results of testing acne products for benzene (2025) (opens in a new tab)March 2025
- J Invest Dermatol 2025 — benzene presence and formation in benzoyl peroxide products (PubMed) (opens in a new tab)
- American Academy of Dermatology — 2024 acne guideline (opens in a new tab)
- NIH DailyMed — benzoyl peroxide labels (opens in a new tab)