Proven healthy hair & scalp. Up to 100% flake free (visible flakes; with regular use). Proven Protection: 1) Refreshing Lather - leaves scalp and hair feeling airy clean. 2) Scalp Protection - from flakes (Associated with dandruff), itch (Associated with dandruff), oil (Washes away oil & flakes), & dryness - guaranteed (Satisfaction Guarantee: If you are not satisfied return this product with a proof of purchase for a refund via prepaid card. Call 1-800-843-3543 for further details). 3) Healthy Hair - grows from a healthy scalp. No.1 Dermatologist recommended.