Head & Shoulders Clinical Strength Itch Relief 2in1 delivers clinically proven stubborn dandruff control, and helps relieve itch. Powered by 1% selenium sulfide, this unique formula starts working 2X faster to fight the main cause of dandruff.* Still gentle on scalp, you can use this formula every wash, and help break the cycle of stubborn dandruff.** Now formulated with a new, great scent for enjoying every wash. *kills more Malassezia at 3 washes vs. 6 washes with ordinary anti-dandruff shampoo **visible flakes, with regular use