Considerations: Benzoyl peroxide is able to produce complete clearing of acne only when used in an adequate dosage and within a properly applied benzoyl peroxide regimen. Some dryness, redness, and itchiness is to be expected in the first few weeks of use.6 Scientists call this initial period the "hardening effect" of benzoyl peroxide. About 1-3% of people are allergic to benzoyl peroxide and experience an inflammation of the skin or severe crusting.3This should not be confused with the "hardening effect" of benzoyl peroxide. Benzoyl peroxide, like any other peroxide, can bleach hair and fabric.1
Acne treatment that you apply to the skin: Most acne treatments are applied to the skin. Your dermatologist may call this topical treatment. There are many topical acne treatments. Some topicals help kill the bacteria. Others work on reducing the oil. The topical medicine may contain a retinoid, prescription-strength benzoyl peroxide, antibiotic, or even salicylic acid. Your dermatologist will determine what you need.