B
Benzoyl Peroxide
Benzoyl Peroxide
active EU restricted
The most effective OTC anti-acne ingredient. Kills acne-causing bacteria (C. acnes) on contact. Available at 2.5%, 5%, and 10%. Evidence shows 2.5% is as effective as 10% with less irritation.
Benefits
Kills acne bacteria, reduces inflammation, prevents resistance
Risks & concerns
Drying, can bleach fabrics and hair. Start at 2.5%. Contact sensitizer for some.
Best for
Oily skin Combination skin
Avoid if
Dry skin Sensitive skin
Targets these concerns
Technical details
- INCI name
- Benzoyl Peroxide
- CAS Number
- 94-36-0
- Category
- active
- Comedogenic rating
- 0/5
- Also known as
- bpo