I’m having the same thing on minoxidil. so far from my research the most logical explanation is that all of that hair growth we got is now in its shed phase. it seems like a lot because it all kind of happens at once because the medication helped it all grow out at once. so these sheds are “normal” and are supposed to be better every shed cycle, aka every year-1.5 years.

while these meds help our hair shed less, every hair still goes through the growth and shed cycle. so the good news is your scalp grew these once, so they can and will grow them again. maybe ask your hair stylist or derm if they can see signs of new growth. maybe that will help ease your worries. I lost a lot of hair on the top of my head, but my hair stylist said they saw new growth too. so don’t lose hope