Yes, I've done it twice. I'm 29 & have 1 fine line on my forehead and have fine lines (deeper than the norm for my age, started seeing when I was about 18) between my eyebrows. I LOVE botox. I get it around my eyes for prevention as well.
As for headaches, my doc didn't tell me, but I had a really bad one for 1 week after my first time. I hear it's common after your first time. It hasn't happened again.
I think I got a total of 28 units? I'm not sure, but somewhere around that number. I can still move everything...maybe it was the technique of the injecter & that's why you can't move?
Did the headache respond to Advil/Tylenol type pain relievers at all? I get headaches easily, so want to be sure after my "birthday botox" treatment this spring that I can just take pain killers for the headaches.