Want to make hair black first to find the cause of hair gray, gray hair and long-term late at night, malnutrition, scalp white spots, melanin deficiency, kidney deficiency and so on. If it is a long time to stay up all night blood heat caused by white hair, with the Chinese medicine side of cypress leaves brewing water tea, change habits, keep enough sleep can make the hair black. If it is a lack of copper and iron caused by gray hair, usually eat more coarse grains, beans, animal liver and other foods with high copper and iron content can make hair black. Kidney deficiency caused by gray hair oral six flavors of dihuang pill, usually eat more walnuts, black sesame seeds, mulberry and other food to tonify the kidneys and black hair can make the hair black. Scalp white spots local melanin deficiency caused by gray hair need to treat the original disease, head white spots subside after the hair can become black. Although there are many ways to black hair, but the cause of the different ways to use different, need to treat the symptoms in order to see the effect.