Q: After achieving results with 5% Minoxidil is it possible to the switch to the 2% version to maintain those results without any adverse hair loss? — I.I., Winnetka, Illinois
A: It will be less effective. The dosing should not be decreased.
Q: Have you any experience with Azelaic Acid as a hair loss treatment — is this something you would recommend using with Rogaine (minoxidil) 2% or 5% solutions? — S.V., Short Hills, N.J.
A: Azeleic acid has no direct benefit in promoting hair growth. Azelaic acid (like retinoic acid) increases the absorption of minoxidil, but also the side effects, so I would especially not recommend it in your case.