Head & Shoulders Clinical Strength Advanced Oil Control Anti-Dandruff Shampoo, 1% Selenium Sulfide, Stubborn Dandruff, 13.5 fl oz

1% SELENIUM SULFIDE: Reduces Malassezia, antimicrobial peptides (S100A12), and inflammatory cytokines IL-1a and IL-8 after 3 weeks of continuous use, addressing stubborn dandruff at the biological level. | STARTS WORKING 2X FASTER: Starts working 2x faster to fight Malassezia when used as directed, up to 100% flake-free protection with regular use. | ADVANCED OIL CONTROL: Helps relieve stubborn dandruff and remove oil for a cleaner scalp feel when flakes and excess oil are both part of your concern. | CLINICALLY OUTPERFORMS KETOCONAZOLE: In a clinical trial, Head and Shoulders Clinical Strength with 1% selenium sulfide provided better dandruff protection than both 1.0% and 2.0% ketoconazole shampoos. | CLINICALLY VALIDATED STRONGER CARE: In a clinical trial, Clinical Strength outperformed both 1.0% and 2.0% ketoconazole shampoos in reducing scalp flaking. | GENTLE ENOUGH FOR EVERY WASH: Use it every wash when used as directed for ongoing stronger dandruff care.