A gua sha is a tool that comes from Chinese medicine, and the word 'gua' means scrape, and 'sha' means sand. This essentially means gua sha treat muscle pain and give you a sculpted effect when pressure is applied onto the face using it. These tools have different edges, which fit on different parts of your face like your cheeks, jaw, forehead, etc to give you more coverage and contact for a great sculpted effect. As you stroke along your face using the “Sweeping technique”, your skin stretches and this creates friction, giving you a well-contoured effect.