Hair loss caused by DHT (dihydrotestosterone) is generally not completely reversible, but can be improved with the right treatment. DHT-induced hair loss is called seborrheic alopecia, also known as androgenetic alopecia. This kind of hair loss has a great relationship with heredity, mainly due to the high level of androgen in the body, which is converted into dihydrotestosterone. Dihydrotestosterone will make the hair follicle tiny, the hair in the anagen phase will gradually become thinner, and the growth cycle of hair will be shortened, so that the original thick and black hair will become thinner and lighter, and eventually the hair follicle will be shriveled up and disappear, and the hair will fall out. Androgenetic alopecia generally cannot be completely recovered, but after timely and correct treatment, most patients’ symptoms can be improved, mainly manifested as a decrease in hair loss, deepening of hair color and increase in hair number, etc., but rarely can be completely cured. For patients with better symptom control, improvement can also be achieved through methods such as hair transplantation. If androgenetic alopecia is diagnosed, early treatment is recommended to minimize the adverse effects of the disease.