I’ve been sugaring for 5 years and have never had an adverse reaction. I never have my crack or genitals done. I prefer to do that with a woman’s razor in the shower. The only part that stings a bit is the lower stomach around the navel. Legs don’t hurt a bit, nor does the butt. My back and butt are naturally smooth, so only a few errant hairs there. I do it every 6 weeks in the warmer weather.