A member asked:

Is it true that bha, sulfur, benzoyl peroxide and alcohol can countereact tretinoin if used at the same time ?

A doctor has provided 1 answer
Dr. Emil Shakov answered

Specializes in Aesthetic Medicine

Retin A (tretinoin): Can dry out the skin and should be taken at a different time from benzoyl peroxide. Also retin a (tretinoin) should be used at night since it has a photosensitizing effect. Bha is a class of chemical peels and best to not use retin a (tretinoin) on same day as peel.

Answered 2/26/2014

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