✓After-Sale service-Our aim to provide our customer best shopping experience. 100%money back guarantee. If you have any question don't hesitate to contact us. We will resolve your question in time. ✓Gua sha for TMJ, Migraine, Facial lifting. This is a very good technique and beginner friendly. You can practice everyday anytime anywhere. Just few minutes of gua sha action every day can have a major impact on skin tautness and clarity. ✓ The purpose of gua sha is to relax the surrounding muscles. This encourages the movements of lymph fluids Your skin will brighten, tone, and be more vital as a result. ✓Gua sha is a technique traditionally used I Chinese Medicine. It is the practice of using a tool to apply pressure in a moving motion along the skin, to remove tension and promote qi flow & blood circulation to the area. Release stress. This allows for a radiant and plump complexion. ✓Material: Medical grade Stainless Steel, polished to a mirror- like finish, our massage tools are durable.The Stainless Steel guasha is long lasting no need to worry about falling.