Hair loss requires attention to hair loss disorders, the common ones being androgenetic alopecia, and resting hair loss. Androgenetic alopecia is related to genetic factors, and the onset of the disease is mainly related to the aggregation of dihydrotestosterone in the hair follicle area. Elevated levels of androgens in the hair follicles can inhibit hair growth and cause hair loss. Androgenetic alopecia has characteristic manifestations, such as hair loss starting from the hairline and slowly moving the hairline back, or in some cases, slowly losing hair from the crown of the head. In addition, resting hair loss is often encountered in daily life, and is related to mental stress and emotions, making the ratio of hair in the resting phase increase and the ratio of hair in the growing phase decrease, causing excessive hair loss, removing the cause can reduce hair loss, and androgenic alopecia treatment can use anti-androgenic drugs such as finasteride, which requires a certain course of treatment to see results.