I have been an esthetician for eight years. I had used Satin Smooth's zinc oxide wax for full body waxing. I do use Cirepil's blue wax for brazilians. I love both types of wax. And to my knowledge I have not had a client complain about reactions of any kind. I recently started using Nufree in place of the Satin Smooth wax. So far I'm not too impressed. I have had a few clients claim that the had some sort of reaction. Absolutely no skin had been taken off. And clients complain about being sticky even after I have used oil to remove it. I'm confused and not know what or if I'm doing something wrong. Any advise or opinions?