Proven healthy hair & scalp. 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.