Separately: Apply them at different times and use only about a "pea-sized" amount of the tretinoin. It can cause a lot of dryness, redness and irritation so start very slowly. Azelaic acid can be use once to twice a day. It is less drying, more tolerable. Contact your dermatologist, they can give you more details about how you are suppose to apply these medications.
Answered 2/12/2016
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A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
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