In general the correct use of selenium disulfide hair wash will not cause hair loss. Selenium disulfide lotion is a dermatological antifungal drug, which can be used for removing dandruff, preventing and controlling seborrhea, seborrheic dermatitis of the scalp, lichen planus (sweat patches) and other diseases, and belongs to the topical topical drug, normal use does not lead to hair loss. The use of the process can occasionally cause allergic contact dermatitis, hair or scalp dryness, hair discoloration and other adverse reactions. It is contraindicated for those who are allergic to the product; use with caution in cases of skin inflammation and oozing. Selenium disulfide lotion should be used under the guidance of a doctor, daily attention to rest, avoid staying up late. The appearance of hair loss should be timely medical treatment, clear cause of the disease and follow the doctor’s instructions for medication.