Head & Shoulders Clinical Strength Advanced Oil Control Shampoo, brought to you by the #1 Dermatologist Recommended Brand, delivers our Maximum Dandruff Protection. Powered by 1% selenium sulfide, this unique formula starts working 2X faster to fight the main cause of dandruff.* Head & Shoulders Clinical Strength Advanced Oil Control Shampoo is Clinically proven, relieving stubborn dandruff and remove oil. Still gentle on scalp, you can use this formula every wash, and break the cycle of stubborn dandruff.