Effective treatment of problem dandruff: Controls the scaling, flaking and itching of the scalp associated with dandruff including redness and irritation Fights the cause of dandruff: Specially formulated with Selenium Sulfide 2.5 percentage, Selsun Gold Treatment Shampoo is proven to not only remove dandruff, but also slow down the rate our skin produces new cells, which is the basic cause of irritations Laboratory tested to control recurrent dandruff: Tests have shown that Selenium Sulfide is one of the most effective ingredients to treat dandruff and control recurrence Relieves symptoms associated with seborrhoeic dermatitis: Medically proven to control symptoms associated with tinea versicolour and as an adjunct in the treatment of tinea capitis Always read the label and follow the directions for use.