On a pain scale from 1 to 10, with a one representing a minor scratch to ten representing something like a kidney stone or a major burn, most clients rate a SMP treatment overall as a three to five. Some clients have actually fallen asleep on us, but in most cases, the treatments are fairly mild. The most painful areas in general to treat are the areas right above the ears and skin over the temple nerves. The least painful areas to treat are the apex of the scalp and the back crown.