A member asked:

Is it okay to mix a pea size amount if my tretinoin with moisturiser? or should i apply moisturiser after? i wait 30m after cleansing to apply it

3 doctors weighed in across 2 answers

Beware dilution: Your tretinoin comes in a certain concentration. Adding moisturizer will dilute the concentration possibly decreasing the effectiveness. A moisturizer is ok but i would wait at least an hour, possibly till the am.

Answered 1/28/2015

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Dr. John Walker answered

Specializes in Plastic Surgery

Yes: I routinely encourage my patients to mix the two, no problem. Apply at night, use sun block during the day, and use birth control, as vit a analogs can cause birth defects.

Answered 5/7/2014

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