Simply speaking, hair transplantation is to transplant the hair follicles in the occipital region to the hair loss area. After the hair follicle is planted in the hair loss area, the hair follicle will have a cycle of recovery and regeneration. After the hair follicle is restored, it will grow new hair, and the hair transplant operation is successful.

However, the hair follicles transplanted to the posterior occipital region are not affected by 5α reductase, and the life span of hair will be as long as that of the posterior occipital region. Therefore, in the case of successful hair transplantation, the effect of hair transplantation can last for a lifetime.