As Janet said, it's definitely harder after HRT. I had 7 laser sessions before I began, and whereas the shriveled hairs used to take two or three days to grow out, they took 12 days after my last session. Those shriveled hairs are like dark clumps beneath the surface (they really are shriveled up hairballs) that are EXTREMELY difficult to cover with makeup. I'm full time and so the bumpy, dark upper lip is quite distressing to me when it's there.
Also, for electrolysis, it used to take a day and a half to grow enough hair to tweeze, and now it takes three.