Gua Sha is one of the traditional natural remedies, and the black and purple color of the back after Gua Sha may be due to stagnation of qi and blood, excessive strength of Gua Sha and other reasons. The depth of the red spot color when scraping Gua Sha is usually a reflection of the severity of the disease. The more serious disease, “gua sha” out more, the color is also deep, if the condition is light, “gua sha” out less, the color is also lighter. Under normal circumstances, the skin “blood stasis” will gradually subside in 3 to 5 days, late some not more than 1 week to return to normal, not only will not damage the skin, but also due to this method of blood stasis, strengthen the local blood circulation, will make the skin become healthier than the original, beautiful. When the patient’s qi and blood stasis is heavy, the local blood circulation is not smooth, and the skin may appear black and purple. In addition too much force when scraping Gua Sha can also cause the skin to appear black and purple. When scraping Gua Sha should be even, the technique from light to heavy, in order to the patient can withstand the degree, scraping until the local flushing or ecchymosis, Gua Sha point until. The company’s products and services are also available in a wide range of colors and sizes, so it’s a good idea to go to a regular hospital for gua sha treatment to avoid any adverse effects.