Feel it work. 24 hour frizz control from root to tip. Clinically proven up to 100% color safe (2 in 1 & conditioner system vs. non-conditioning shampoo) dandruff protection (visible flakes; with regular use). Ignite your senses & feel it working with every wash. Head & Shoulders' unique formula works 7 surface layers deep to help stop dandruff at its source & maintain healthy hair. No. 1 dermatologist recommended brand.