Neutrogena® T/Gel® Therapeutic Shampoo is effective as a therapeutic treatment to help control the scalp itching and flaking symptomatic of scalp psoriasis, eczema, seborrhoeic dermatitis and even common dandruff. The clear amber formula starts working on contact to help control itching and flaking from the first use and continues to work for hours even after the shampoo is rinsed off, leaving hair looking healthy and manageable.