A member asked:

Does using a tretinoin 0.05 cream for a month, every 2 days, affect the menstrual cycle ?

A doctor has provided 1 answer

Application of this topical to surface skin as described does not penetrate skin deeply enough to enter the blood in a significant amount. As such it does not affect any medication or natural hormone involved in the menstrual cycle.

Answered 7/4/2023

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