Selsun Gold Medically proven to fight problem dandruff Selsun Gold Shampoo controls the scaling, flaking and itching of the scalp associated with dandruff. Selsun Gold is specially formulated with Selenium Sulfide 2.5%, proven to not only remove dandruff, but also to slow down the rate our skin produces new skin cells; which is the basic cause of flakes and itchiness. Laboratory tests have also shown that Selenium Sulfide is one of the most effective ingredients to treat dandruff and control recurrence. Medically proven to fight problem dandruff. Dandruff. Seborrhoeic dermatitis. Tinea versicolourAs an adjunct in the treatment of tinea capitis.