Selsun Dandruff Treatment 100ml Selsun Shampoo is a treatment for dandruff & seborrhoea dermatitis (a greasy, crusting, itching scalp caused by excess oil). Selsun Shampoo works in two ways; by reducing the greasiness of the scalp which effectively controls itchy & scaly dandruff & by slowing down growth of the layer of the skin cells on the scalp that cause dandruff. Ingredients The active ingredient is Selenium Suphide. The other ingredients are Purified Water, Monoethanolamine Lauryl Sulphate, Empigen BB, Bentonite, Glyceryl Monoricinoleate S, Sodium Chloride, Titanium Dioxide, Perfume, Sodium Acid Phosphate, Citric Acid. Directions Adults & children over 5 years old: Shake the bottle well before using. Wet the hair & then massage enough Selsun onto your scalp to form a lather. Leave for three minutes. Rinse thoroughly & repeat. Selsun should be used twice a week for the first two weeks & then once a week for the next two weeks. After this first course of treatments, Selsun should not be used more often than is needed to control your scalp condition.