What is the difference between differin and benzac (benzoyl peroxide)?

Acne medications: Both differin & benzac are acne medications. Differin is a retinoid, relative of vitamin a. Its generic name is adapalene. Benzac ac is a benzoyl peroxide. They both treat whiteheads, blackheads and small red papules and pustules very well. They both can be a little drying and irritating, so start using them slowly, like alternating them at night for the first week or two. Differin is prescription.