Gua Sha is a facial massage technique dating back to the 7th century China that helps reduce facial puffiness and tension with regular use. Our sleek and modern Metal Gua Sha is designed with a unique combination of ridged and smooth sides that provide an enhanced gua sha routine. Good for the head, back and neck, it gently helps relieve tension and the appearance of puffiness. Directions: To use, gently move the massager along the chin and neck in upward motion using gentle but firm pressure.