S u m m a r yAndrogenetic alopecia is caused by the influence of sex hormones on hair follicles and by hereditary factors. Characteristic for that type of alopecia is shortening of the hair growth phase and elongation of the rest phase caused by disturbance of the process of transformation of testosterone into dihydrotestosterone. Treatment of that type of alopecia involves 5α-reductase inhibitors, antagonists of the androgenic receptor or stimulating proliferation of cells to induce the hair growth. A number of plant raw materials work that way, thus they can be used in treatment of this type of alopecia.