Gray hair can be caused by ageing, mental tension and other physiological factors, and secondly, it may be related to vitiligo, albinism and other diseases, it is recommended that the patient to take general treatment, medication and other ways to improve. 1. physiological factors: age, mental stress and other physiological factors may trigger hair white, it is recommended that daily rest, regular work and rest, balanced diet, and appropriate physical exercise, help to improve the white hair. 2. vitiligo: vitiligo patients may also appear white hair, patients need to try to avoid trauma, mental stress and other triggering factors, you can follow the doctor’s instructions for external use of glucocorticoid drugs, such as trimethoprim, halomethasone, etc., to stop the proliferation of white spots, so as to improve the situation of white hair. 3. Albinism: Albinism may cause white hair, patients should pay attention to sunscreen, avoid long-term exposure of the skin to the sun, in order to prevent sunburn. When you go out, you need to wear long sleeves and long pants, wear a hat or sunglasses and so on. The cause of gray hair is not one, in the exclusion of physiological factors, it is recommended that patients seek medical examination to clarify the cause of the disease, with the doctor standardized diagnosis and treatment.