Bioselenium shampoo in Kenya prevents and treats scalp seborrheic dermatitis. It contains SELENIUM SULFIDE 2.5% which is used to treat dandruff-like conditions, seborrhea, and also psoriasis. This medicine is for external use only. Do not take by mouth. Shake well before using. Wet hair with luke-warm water. Then apply 5ml of shampoo or as recommended and massaged into the scalp. Leave for 3-5 and then rinse off.