Head & Shoulders with our proprietary HydraZinc™ Complex takes a multidimensionalapproach to dandruff—targeting its underlying drivers while supporting scalp recovery.HydraZinc combines 1% zinc pyrithione (ZPT) with complementary technologiesdesigned to address three key drivers of dandruff: microbiome imbalance, scalp-barrierdisruption, and irritation. HydraZinc demonstrated up to 72 hours of dandruffprotection, providing 24/7 protection even between washes. Lasting dandruff relieftakes more than addressing visible flakes.