I'll be totally honest here. When I had it done to me, I couldn't help but picture a seared scallop. At first, I didn't feel much, but it built and built and for awhile I think it hurt. Afterward, my face was hot and I craved sitting in front of the Zimmer chiller for as long as possible to get rid of the heat. I then drove home with the A/C blowing on my face. I had two beers and within two hours I felt totally fine. The next day I went about my business as if nothing happened. So really, we're talking two hours of feeling really hot, then fine. You should also know that when I get sick I'm exceedingly useless compared to my wife who went all natural for delivery number 3, so my colorful description of 3 minutes of pain during the last bit of the procedure and the burning afterwards might deserve to be taken with a grain of salt.