While regular shampoo only wash the flake away, Head and Shoulders Smooth and Silky shampoo is clinically proven to deal with the cause of dandruff and give up to 100 percentage dandruff and itch protection for 72 hours Moisturizes your hair from root to tip, leave hair smooth and shiny Restore scalp's natural balance, for long lasting dandruff protection Gentle formula with 0 percentage Paraben, Phosphate and Paraffins added Dermatologically tested; Designed to be pH balanced to skin similar to premium skin care product and gentle to hair