Schematic diagram of facial gua sha The smooth edge is placed against the oiled skin surface, pressed down firmly, and then moved along muscles— hence the term tribo- effleurage ( ie, friction- stroking) — or along the pathway of the acupuncture meridians, along the surface of the skin, with each stroke being about 4– 6 inches long. 1.Dilate local blood vessels, increase blood flow speed, and promote the growth of cell tissues. 2.Eliminate wrinkles, tighten skin and delay aging. 3.Reduces puffiness, eye bags and dark circles around eyes, makes the face for a natural healthy glow. 4.It can be used with other beauty products to promote the absorption of nutrients.