Indiscriminate use of selenium disulfide may lead to contact dermatitis, dry hair or scalp, hair discoloration and other adverse effects. The common dosage form of selenium disulfide is lotion, which mainly has the effect of anti-seborrhea, and some anti-fungal effect, so it is suitable for dandruff, seborrheic dermatitis of the scalp, phaeochromocytoma (sweat patches) and so on. Indiscriminate use of selenium disulfide may lead to contact dermatitis, hair or scalp dryness and other adverse consequences, so the specific use of the recommendation to consult a physician or pharmacist, not blindly self-medication. In addition, this product is prohibited in the external genital area, and skin inflammation, vesicles, oozing parts should also be prohibited, and in the hair coloring, perm within two days after the use of this product, allergic to this drug is prohibited. Use should also avoid contact with the eyes and other mucous membranes (such as the mouth, nose, etc.), such as the external application site such as burning sensation, itching, redness, swelling and other conditions, should also stop using the drug, and will be localized drug wash. The drug should be used under medical supervision.