The Sun & Sia Gua Sha: the essential beauty accessory. This beauty/massage accessory derived from traditional Chinese medicine has been used for thousands of years. Its literal translation means “scratch” (gua) the “evils” (sha). Sun&Sia Gua Sha is made from natural stone that is simply cut and polished without chemical treatment. It is a completely natural accessory that does not contain any chemical or harmful substances. Its shape is studied to perfectly fit the lines of the face with a good grip.