A member asked:

How much benzac (benzoyl peroxide) ac 2.5% should i use to prevent an upcoming pimple on the tip of my nose?

A doctor has provided 1 answer
Dr. Carla Enriquez answered

Specializes in Pediatrics

Preventative : Acne medications only work to prevent, not clear, pimples. If an acne lesion is already formed, no medicine will remove it. Topical medications work by decreasing the local skin factors that promote acne pimple formation. Use your benzac (benzoyl peroxide) as your doctor prescribed. It is very effective if used properly and continuously.

Answered 1/21/2014

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Does benzoyl peroxide cream reduce the size or number of pimples?

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