The reason why the hair on top of the head turns white: one, the body aging performance, belongs to the normal physiological phenomenon, with the age of the hair follicles in the melanocyte activity decreases, so that the production of melanin is reduced or disappeared, which leads to the appearance of white hair on top of the head. Usually eat more food with high melanin content and use your fingertips to do massage on the scalp at the top of the head to promote local blood circulation can reduce gray hair. Second, immediate family members with white hair on the top of the head, considered chromosomal dominant genetic causes, there is no good treatment for this situation, you can use a horn comb to gently comb the hair to promote blood circulation to improve the symptoms. Third, mental stress, long-term late night, lack of copper and iron, affecting the synthesis of melanin and lead to gray hair, to maintain a good state of mind, change the rest time, eat more black fungus, animal liver, nuts and other foods with high copper and iron content, the symptoms can be improved.