A healing technique of Traditional Chinese Medicine, gua sha dates back to the Ming Dynasty (1368-1644). It commonly involves using a porcelain spoon on lubricated skin in one direction for the purpose of increasing circulation and releasing stagnant blood, reducing muscle tension, and expelling toxins. When more blood and oxygen flow to the area that is treated, the body responds more efficiently and healing can take place.
The marks from Gua sha are not bruises. It is the stagnant blood coming to the surface so new blood can heal the area. The marks should not hurt and should fade within 3-5 days.