Selenium disulfide is effective in seborrheic alopecia. Selenium disulfide is a kind of lotion, can treat skin fungus, for dandruff prevention and control of seborrheic dermatitis of the scalp, lichen planus has a certain effect, this drug can be anti-seborrhea, seborrheic alopecia has a certain effect on the improvement of seborrheic alopecia. Seborrheic alopecia is also called androgenic alopecia, and the high level of androgen in the body has a relationship, the use of selenium disulfide lotion, can inhibit the secretion of oil to remove dandruff, for scalp oil, dandruff, and scalp itching patients. If the skin has inflammation, vesicles and oozing parts can not be used, not for external genital areas, can not contact the eyes and other mucous membranes, this is a kind of external drugs, can not be taken internally. If an adverse reaction occurs after using the medicine, stop using the medicine immediately, wash the local medicine clean, and consult a doctor promptly if necessary. Selenium disulfide may have adverse reactions, such as contact dermatitis, dry hair or scalp, hair discoloration, etc. It should be used under the guidance of a doctor, not blindly used by yourself. It is recommended that patients with seborrheic alopecia consult a doctor in time and standardize treatment under the guidance of a doctor.