This Comb Edge Black Obsidian Gua Sha helps to increase circulation, diminish the look of fine lines and stimulates collagen. Use these fine teeth for trouble areas such as crows feet, laugh lines, forehead issues and neck lines. This tool pairs perfectly with your serums and oils to boost skin's firmness and luminosity. As you are gliding it across your face, you’ll gently stimulate the skin to promote long-lasting beauty