OK, I survived. Here's the scoop. The hair has to be dark because the laser light follows the dark hair shaft down to the root and kills the root. I had my upper lip, chin, and neck done. The upper lip hurt a little, like a pin prick we've all done a million times. I didn't feel the chin or neck at all. Different hairs grow in different cycles so I'll be going back in 6 weeks. You have to have some stubble to have this done, and you can't have been in the sun for 2 weeks, or at least you have to be using sunscreen regularly. I'm going to have my legs done, too.