I was shaving, and I noticed primarily that certain spots didn't grow back after a while (or rather, grew the same dusting of tiny, fine hair that cis women get) - like I'd shave off my handful of chest hairs and then 1 or 2 would never reappear, each time. After a few months, I could go without shaving anywhere but legs and armpits and face forever and see no regrowth.
These days, I can also shave my legs once a week or less, whereas I used to be doing it every 2 days. I hear from various cis female acquaintances that this is about typical for the great leg hair battle...