2 doctors weighed in:
How do I properly use tretinoin and azelaic acid?
2 doctors weighed in

Dr. John Ebner
Dermatology
1 doctor agrees
In brief: 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.

In brief: 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.
Dr. John Ebner
Dr. John Ebner
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