Heart Shape Magnetic Synthetic Hematite Gua Sha, for Face to Lift, Decrease Puffiness and Tighten, Size: about 77~82mm long, 54~57mm wide, 5.5mm thick. âGua Sha: Not only can improve circulation of blood flow, but it also helps the cells in the skin get sufficient nutrition and oxygen, accelerate the metabolism of cells, and maintain the elastic state of your skin. âWork on pressure points across the face to relieve jaw tension and detox. âNew daily routine: Use gua sha daily to promotes the lifting and smoothing of the skin, leaving the face lifted and radiant.