Gua sha involves repeated pressured strokes over lubricated skin with a smooth edge skin is typically lubricated with massage oil and is commonly a ceramic chinese soup spoon was used or a well worn coin even honed animal bones water buffalo horn or jade a simple metal cap with a rounded edge is commonly used in cases of fatigue from heavy work a piece of ginger root soaked in rice wine is sometimes used to rub down the spine from head to feet the smooth edge is placed against the o