There is no fastest way to treat gray hair. The main causes of gray hair are physiological causes, pathological causes and other factors. It is necessary to treat the symptoms according to the specific causes, usually including general conditioning and drug treatment. 1. Physiological reasons: As we grow older, melanin cells become fewer and fewer, and human hair will gradually turn gray. There is no cure for gray hair in this case. If you have aesthetic needs, you can consider coloring your hair. 2. Pathological reasons: such as albinism, vitiligo, etc., can also cause gray hair. But there is no effective treatment for albinism. If localized hair and scalp whitening is caused by vitiligo, it can be treated by taking oral expulsion of white babu period tablets or irradiating with 308 excimer laser. 3. other factors: such as a sudden major mental shock, long-term stress, anxiety, depression and other mental factors can also make the hair white, this situation should be timely psychological guidance to control the progress of white hair. The appearance of unexplained gray hair, it is recommended to seek medical advice as soon as possible, do not blindly self-treatment. The above drugs need to be used in accordance with medical advice.