I've had a lot of electrolysis. I have terribly sensitive skin, and the pulses just about make me jump off the table, even when numbed up with the creams and everything.
So, if I'm doing the upper lip and chin, for example, I'll make an appointment with a dentist right before my electrolysis appointment and have dental blocks done. He charges $75 for six injections in the mouth, which don't hurt much at all, and my upper lip, lower lip, and chin are numb. For the next two and a half hours, I feel NOTHING. As a matter of fact, I usually fall asleep for an hour or two while my electrologist is working. Best $75 I've ever spent.
For the rest of the face, since I can't get dental blocks for those, I have subdermal injections done to numb the skin. They do it right there in the salon... Thankfully the owner is licenced to give the injections. Then, it's more nap time while she zaps away.
Thank goodness for anaesthesia!