Benzoyl peroxide is a proven acne treatment that kills acne-causing bacteria and helps unclog pores, but it can be drying and irritating.
Irritation
moderate
Source
synthetic
Beauty ingredient research
Browse the review database to understand what an ingredient is, what it does in a beauty formula, when it is useful, and when it deserves caution across skincare, haircare, bodycare, makeup, and more.
20769
Reviewed ingredients
524
Low-concern standouts
2884
Need usage caution
Benzoyl peroxide is a proven acne treatment that kills acne-causing bacteria and helps unclog pores, but it can be drying and irritating.
Irritation
moderate
Source
synthetic
A potentially gentler cousin of classic benzoyl peroxide that fights acne bacteria and helps clear pores, but may still cause dryness or irritation in sensitive skin.
Irritation
moderate
Source
synthetic
Sulfur is a time-tested acne-fighting ingredient that works by killing bacteria and gently exfoliating dead skin, but it can be drying and has a distinct smell.
Irritation
moderate
Source
natural
Sulfurized jojoba oil combines the moisturizing benefits of jojoba with sulfur's antimicrobial power, making it a targeted option for acne-prone skin, though it may cause irritation for some.
Irritation
moderate
Source
semi-synthetic