Gray hair refers to total or partial graying of the hair and can be classified as congenital or acquired. Congenital gray hair often has a family history and is more common with limited gray hair, mostly in the front head hairline. There are three more causes in acquired: nutritional deficiency, chronic mental stress and insufficient sunlight. In addition, some skin diseases such as vitiligo can also cause gray hair. Normal people usually start having gray hair at the age of 35, and if it appears early, it is best to go ahead and treat it. The biggest factor in the production of gray hair is due to a stressful life and too much pressure. When a person is under more stress than his highest limit can carry, this will accelerate the black hair to gray. Most of the gray hair patients have gray hair because of work or study stress, mental tension, and the inability of the stomach and intestines to effectively digest the food eaten, resulting in nutritional imbalance. In addition, the lack of trace elements in the body is another reason for the formation of gray hair. Chinese medicine believes that gray hair is related to blood heat, such as “Confucianism” says: “young hair early white fall or white flakes, this blood heat and too much.” For the treatment of white hair, Chinese medicine is based on cooling the blood and clearing heat, nourishing the yin and tonifying the kidneys, using Chinese herbs such as Sheng Di Huang, Dan Shen, Zhen Zhen Zi, dry lotus grass, black sesame, mulberry and so on. You can also eat underground tubers, such as He Shou Wu, Shu Di, and even commonly eat potatoes and taro, from which you can absorb a large number of trace elements to stimulate the hair root and grow dark hair. In addition, you should also pay attention to the mood relaxation, do not create too much stress for yourself in life!