Hair loss is divided into two kinds, one is permanent hair loss caused by necrosis of hair follicles, and the other is temporary hair loss caused by damage to hair follicles, permanent hair loss symptoms manifested as baldness, he is a gradual process of hair loss, from the forehead gradually increase, generally there are two reasons can lead to such symptoms - heredity and overweight. Temporary hair loss is mostly due to the destruction of the hair growth environment, such as inflammation of hair follicles, sun exposure, lack of sleep, external stimuli, mental stress and so on. Treatment requires attention to daily washing and care, nutritional intake, avoidance of sun exposure, in addition to the external use of Taoist natural hair growth combination or nano hair growth products, supplemented by massage comb to promote blood circulation, massage the scalp and improve the hair growth environment. This is a long-term process, not a day or two can be effective, the need for long-term persistence, the attitude of the correct treatment is the most important, I hope to be able to help your father.