I'm late to the party on this thread, but I had a very negative hair loss experience with Rogaine / Minoxidil. I do know that Rogaine has worked wonders for many people so my intent is not to say that it's bad for everyone, but the evidence is definitely out there that it can do more harm that good depending on the person.
I'm a 50yr old male and I started Minoxidil 5% foam in Nov 2019 as a purely preventative measure. When I started I still had 85-90% of the hair density and hairline (Norwood 1) I had in my 20's. I have also been using Finasteride for almost 20yrs. I was not really seeking regrowth from minoxidil, just wanted to maintain what I had so I doubled down on the defence. Admittedly I didn't do much research before starting the drug…I mean it's an over the counter product sold in the same section as the J&J Baby shampoo intended to grow hair…it wouldn’t damage your hair, right? I wish now that I’d done more research beforehand, although I’m not sure with the multiple success stories out there that I would have made a different decision.
In the first 3 months I really didn’t notice any mass shed or any other side effects, or growth, but in early March 2020 (3-4 months in), I started to see regression on my hairline and over the next couple months became very diffuse through my temples through to the crown…basically everywhere I was applying it. This is when I did the deep dive research and found out about the possible sheds and that it was a sign that it was working. So I ‘trusted the process’ and continued up until the 7 month mark (June 2020). My hair continued to shed and become more diffuse up to this point. I quit the drug in June 2020 after 7 months of use. It’s now Nov and I’m continuing to shed hair…something to be expected after quitting as the hair cycles reset. They say you will only lose the hair that Rogaine re-grew… not true in my case… I did not get incremental growth (new hair). I have yet to see any signs of recovery and know now that I will likely never get back what I had and I’m still waiting for it to stabilize. I’ve lost more hair in the last 8-9 months than I have in the last 20 years and it has been a devastating experience. I suspect the stress and anxiety of the overall situation has had an impact too. I’m convinced the drug addicted my follicles, even the heathy ones… perhaps something to do with being a bit older. For the record I had no other medical conditions, take no other medications other than finasteride, I workout 4-5 times per week, weigh 155lbs with <15% body fat etc. The only places I lost hair is where I applied the drug. Again I know it works for many people but there is an element of Russian roulette when you use Rogaine. If you have decent hair already do your research and consider all the potential consequences before using it. See photos of my pre-minoxidil, and regression along the way.