Adding Rogaine Years After Starting Propecia

Dr. Rassman,
I have been on propecia for roughly 6 years. I recently felt that it had lost a little bit of effectiveness, although I am also obsessive compulsive which probably played into that line of thinking. My question is if I begin to add rogaine to my regimen will I have some benefit. I guess I am confused whether or not any lost hair is salvageable after 6 years. Would the propecia keep some hairs salvageable for rogaine to take effect after this long?

Lost hair is likely not “salvageable” after many years. Remember that there is no cure for genetic hair loss. Drugs such as Propecia (finasteride 1mg) will slow the process. Propecia is not losing its effectiveness, your hair loss process is continuing so that your genetic predisposition is showing through. Or, as you said, your OCD may be causing you to over-examine your hair to try and find fault where there is none. I couldn’t say beyond speculation.

Hairs grown or maintained from Propecia will not be maintained using Rogaine, so if you stop taking Propecia, you will likely have “catch up” hair loss. In other words, your hair loss will progress to be as if you never took the drug in the first place. I believe Rogaine (minoxidil) can help, but it is the same story as Propecia on its limitations.