Due to the reduction of melanin in the hair follicles, there will be yellowing and graying of hair, divided into congenital and acquired factors, eating black sesame can not solve all the problems of yellowing and graying of hair, generally congenital genetic factors leading to yellowing and graying of hair, through the role of food therapy is not obvious. Most of the acquired hair yellowing and graying are caused by certain diseases, such as hypothyroidism, plant nervous disorder, malnutrition and long-term mental anxiety and tension, which may reduce the melanocytes in the body and thus reduce the melanin in the hair follicles. This situation can be improved by dietary therapy, such as eating black sesame, black beans, etc. Although there is a certain effect, but it varies from person to person, and requires a long time to adhere to, only to play a supporting role. To really solve it, you still need to treat the primary disease that causes yellowing and graying of hair to make it possible to darken the hair color. Black sesame contains cystine and cysteine, and also contains vegetable protein, magnesium, potassium, iron, calcium, phosphorus, zinc, copper, vitamin B, niacin and folic acid, which can assist in improving the nutritional status of the hair and help darken it. In addition to black sesame, black beans contain melanin-producing substances, which have the effect of promoting melanin production, and you can also eat more red dates, peanuts, walnuts, etc., to help darken the hair. But be careful not to eat too much of this type of food at once to avoid indigestion. To really achieve the purpose of improving hair color, it is recommended to actively consult a doctor to treat the primary disease, while supplemented with Chinese medicine class hair augmentation drugs for. Also keep a happy spirit, cheerful personality and emotional stability. Do not be picky about your food, do not smoke, drink, do not stay up late, and at the same time strengthen your exercise to enhance your physique. You also need to pay attention to not over-dyeing and perming hair, etc., which can damage the hair follicles or hair quality and affect the treatment effect.