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How does a cleanser containing glycolic acid or benzoyl peroxide work?

Dr. Ellen Marmur, MD
Dermatology

A cleanser containing active ingredients such as AHA acids, salicylic acid, or benzoyl peroxide will definitely have an effect. Usually a cleanser containing any of these ingredients uses a stronger surfactant, so it will leave the skin very dry. Acids work immediately, so if you use a cleanser with 2 percent salicylic acid, that active ingredient does its job (dissolving dead cells on the surface of skin) the minute it interacts with the skin. It doesn't need to sit on your face for long. Even though you wash it off, a residual of an active ingredient such as benzoyl peroxide will linger on the skin and remain active and effective.

Simple Skin Beauty: Every Woman's Guide to a Lifetime of Healthy, Gorgeous Skin

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Simple Skin Beauty: Every Woman's Guide to a Lifetime of Healthy, Gorgeous Skin

What if a leading dermatologist just happened to be your best friend and you could ask her anything? DR. ELLEN MARMUR, a world-renowned New York City dermatologist, answers all your questions with...

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.