I'll offer you my experience.
I'm far from bald, but my hair is falling out. I'd be noticeably thinning if I didn't have so much hair to begin with.
A little over a month in on pelo-1; transferred after a year of Propecia (only missed one pill the whole time) and my male pattern baldness scalp itch has decreased. An acne flare up in week 4 of pelo-1 finasteride occurred, but weather change always causes that for me and the air is drying up from summer to fall so with that variable there's no telling if it's the pelo finasteride.
Hit a huge shed on my last month of Propecia (Aug - Sept) but that's after a month or two of occasional missed night time min treatment... So I'm on tight min regiment now - every 12 hours - If I cut out that variable successfully then I can tell you just how well pelo finasteride works.
Best case scenario I normalize my min regiment and pelo finasteride works, and my shedding decreases by atleast half. That'd be 5-10 hairs on my hands after I apply min or style my hair. So noticeably shed about 40 a day between shower, styling, and regular activity.
I'll let you know if I get there.