Misc: Pyrithione zinc. 3 action formula. Clinically proven to help restore scalp's natural moisture. Up to 100% flake free (visible flakes; with regular use) 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 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.