Gua Sha involves applying a thick oil to the skin and using a smooth edged instrument to scrap the skin. The acupuncturist uses long or short strokes causing redness in problem areas. The most common areas for treatment are the back, shoulders, neck, limbs and buttocks. Occasionally the chest and abdomen are treated. Gua Sha is used in conjunction with facial acupuncture rejuvenation to help increase firmness, circulation, and elasticity of the skin. Gua Sha is commonly used to treat and prevent the common cold, bronchitis, flu, asthma, and pain. Additionally, it is used to detoxify the body, and fevers which brings the excess heat and toxins to the surface of the body to be released.