Benzoyl peroxide is a topical agent that releases oxygen to kill Cutibacterium acnes (formerly Propionibacterium acnes) bacteria and has mild keratolytic and comedolytic effects. It is widely used to treat inflammatory and comedonal acne.
| Reported effect | How often | Notes |
|---|---|---|
Dryness and peeling | Common | Skin can become dry, flaky, or scaly, especially at higher concentrations. |
Erythema and irritation | Common | Redness, stinging, or burning at the application site, often dose-dependent. |
Bleaching of hair and fabrics | Common | Oxidizing action can discolor colored clothing, bedding, and hair. |
Contact dermatitis | Uncommon | Irritant or, less often, allergic contact dermatitis with itching and rash. |
Increased photosensitivity | Uncommon | Some users report heightened sun sensitivity; sunscreen use is advised. |
Severe hypersensitivity reaction | Rare | Swelling of face/eyes, throat tightness, or difficulty breathing requiring immediate care. |
Anaphylaxis | Very rare | Serious allergic reactions have been reported in regulatory pharmacovigilance data. |
Frequencies reflect typical cosmetic use reported in the literature, not a guarantee for your skin.