Feel the difference! Denorex® contains effective anti-dandruff medicine plus an extra anti-itch ingredient found in no other dandruff shampoo. The Denorex® tingle tells you it is working to provide temporary relief from the itching, scaling and flaking of dandruff. Denorex® Extra Strength + conditioners contains medicine to control the stubborn symptoms of psoriasis, seborrhea, and dandruff, while the conditioners give your hair body, shine and manageability.