This gua sha stone is composed of Bian stone, an amalgamate of 40+ minerals known for their healing properties. Each edge of the tool is intentionally architected to enhance the practice of facial gua sha, which is a traditional Chinese beauty practice. This practice of "stone medicine" is an ancient Taoist healing technique. Practicing the facial gua sha will clear, smooth, plump, tighten, and rejuvenate skin while reducing under-eye circles and puffiness. The facial gua sha method works by releasing tension in the muscles of the face, smoothing out the fascia, and circulating blood and lymph through the tissues. It also delivers whole plant actives from our products into the deeper layers of the skin for increased absorption and effectiveness. The result is deeply hydrated, plump, toned, and sculpted skin with a radiant glow. We recommend protecting this gua sha stone with the Pouch, this natural stone is fragile when dropped on a hard surface.Some Bian Stones may have stone textures / white veins / brownish spots left by the process of formation. These are a sign of the Bian stone’s authenticity.