Gua sha has existed for many years and, because its results are basically magic, it’s not going away anytime soon.  From lasers to needle to lights to scary-looking gadgets you can’t even name, it seems like anything that’s all the rage in skincare these days requires a combination of batteries, plugs or a licensed technician. We’re truly living in the technology age of self-care and while innovations are undoubtedly exciting, sometimes all we really want and need is something simple…