Could Minoxidil and Finasteride Benefit the Same Follicles?

Dr Rassman,

My question is: does finasteride play any role in maintaining minoxidil dose-dependent hair?

I got started on 5% minoxidil topical in early Feb, 2009. My derm prescribed Finasteride oral 1mg/day too, but I did not pursue that medication due to the usual side-effects related concerns. There was an initial minox-induced shed: not a massive one, but scalp showed. Things started looking up 4 months later but then again in July/August a bout of minor shedding ensued. Survived that too. In November yet another shed started and this one was bad; short fine hairs all over the pillow in the morning. Scalp showed yet again, as bad as after the first shed in March. In December, I panicked, decided that Minox wasn’t working for me, and got started on Finstaride 1mg.

By mid-Feb this year, there was a sort of minor miracle on the top of my head. My hair is looking its best in maybe two years. I hope you agree with me that it’s unlikely that Finasteride started growing hair within 10 weeks of beginning its use. My (semi-literate) guess is that Minox first grew “peach fuzz”, which gave way to intermediate hair, which then was replaced by terminal hair. I suffered synchronized sheds, the last one being the shedding of intermediate hair. Maybe more sheddings are in store for me, maybe not.

To get to the point, I am so pleased with the result that I’ve gotten greedy: I want Finasteride growth too. No sexual side-effects so far. I’d like to press on with Fin, and reserve the option of discontinuing it in future if side-effects show up. I understand that that would result in catch-up loss, but then probably I’d be content with the hair that Minox grew for me.

Hence the question: do minox and Fin have a cumulative beneficial effect on the same hair follicle? Will minox-dependent hair too be lost in catch-up loss if Fin is stopped? If the answer is in the affirmative, I’d probably be better off stopping Fin right away, since I’ve been using it only for 3 months.

Thank you for a patient reading, and thank you for your time.

You would have to poll each hair follicle and ask them what they liked better. If you can not communicate with them, then you are like me who frankly does not know the answer to your question. My best guess though (keep in mind I could be mistaken) is that because the medications work in different ways and finasteride will not keep hair grown from minoxidil and vice versa, that the benefits are independent of each other. Many men do use both medications concurrently, and as long as you can afford both (and maintain the regimen) I say go for it! It’s ok to be greedy and want your hair to look as great as possible. If the meds work well for you, that’s great news!

While it is unlikely that any major hair growth you’ve seen in just 10 weeks occurred from finasteride, you could’ve seen benefits from the medication that have helped your hair look better overall.