Benzoyl Peroxide

Benzoyl peroxide is a popular acne-fighting ingredient that works by eliminating acne-causing bacteria, reducing inflammation, and unclogging pores. It's commonly found in spot treatments, cleansers, and leave-on gels.

What Benzoyl Peroxide is Used For

When to Be Cautious with It

Benzoyl peroxide can cause dryness and irritation, especially for those with sensitive skin. Common side effects include redness, peeling, and flaking—often more noticeable when first starting use. It may aggravate conditions like eczema and is generally not recommended for rosacea-prone skin. Additionally, it can bleach fabrics such as towels and pillowcases.

Safety Concerns

Recent concerns have surfaced about benzene, a known carcinogen, being detected in some benzoyl peroxide products sold in the U.S. Independent tests suggest that, especially when exposed to heat, these formulations may break down and release benzene. This has prompted safety concerns and demands for tighter regulation and testing. Some dermatologists recommend using caution, particularly with products stored in warm conditions.

If you’re thinking about using benzoyl peroxide, opt for trusted brands and store the product correctly. For those with sensitive or mild skin issues, gentler alternatives like salicylic acid or azelaic acid may be more suitable.