Misc: 3 action formula. Pyrithione zinc. America's No. 1 dandruff shampoo (Based on volume sales). Up to 100% 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). Flake free (visible flakes; with regular use). 3 Action Formula: 1) Cleans - to remove oil and flakes. 2) Protects - scalp from dandruff. 3) Moisturizes - each hair strand from scalp to tip. No. 1 dermatologist recommended. www.headandshoulders.com. www.pg.com. Made in USA of US and/or imported ingredients.