Growing gray hair may be caused by physiological factors, vitiligo, etc. The causes are different and the treatments are different. It can be improved by hair coloring and medication. 1. Physiological factors: ageing and aging can lead to gradual whitening of the hair, for this cause of gray hair does not need to be treated, and can be improved through hair coloring. 2. Vitiligo: Vitiligo is associated with heredity, immunity and other factors, which can cause localized skin hypopigmentation, part of which can be accompanied by white hair. Therefore appear in the scalp of vitiligo can also cause local white hair, need for vitiligo medication, such as topical halomethasone ointment, Hasinide solution and other drugs, with anti-inflammatory, regulate the immune system, and promote the role of the local recoloration. There are many other causes of white hair, should be timely to the hospital to improve the examination, clear cause, under the guidance of the doctor with medication.