Frequent combing can not improve the white hair, white hair need to be based on the specific cause of the symptomatic treatment, the common cause of hereditary white hair, old age white hair, disease factors such as vitiligo and so on. Frequent combing can stimulate the blood vessels in the head, can effectively promote blood circulation in the head, which is more effective in promoting hair growth, but no improvement in the effectiveness of gray hair. 1. hereditary white hair: for hereditary white hair patients need to develop a regular routine, to avoid staying up all night, if necessary, can improve the symptoms of white hair by coloring the hair black. 2. old age white hair: most people with age, the body melanin cells will decay, which will make the hair white, this is a normal physiological phenomenon can not be treated! 3. Vitiligo: for vitiligo caused by white hair, you need to be guided by a doctor to use calcium-modulated phosphatase inhibitors, such as 0.1% tacrolimus ointment, 1% pimecrolimus cream, etc., as well as topical glucocorticoids, such as dexamethasone ointment, mometasone furoate ointment. Frequent combing is not effective in improving gray hair. For patients who exclude physiological gray hair, it is necessary to consult a doctor in time to check the cause of the disease, and the doctor will treat the cause of the disease. The drugs mentioned above should be used according to the doctor’s instructions.