I only get my brows done, so I'm not sure about other parts... One time I broke out in hives because she put some soothing oily stuff on right after she did it. I didn't realize she was going to do it until after the fact and there were no ingredients on her container. Since then, I've told her not to use it and haven't had any problems. At first I suspected nut, but now I think it's probably more likely it was tea tree which I'm also horribly allergic to.