Extra Strength Denorex dandruff shampoo and conditioner helps relieve moderate symptoms of dandruff, seborrheic dermatitis and psoriasis. Formulated with 3% salicylic acid, Extra Strength Denorex works to prevent the recurrence of these symptoms. The vitamin enriched shampoo and built-in conditioner provides the body and shine you would expect from a separate conditioner and the tingle tells you it's working. Made in United States Shake well. Apply to wet hair. Gently massage into hair and scalp to work up a lather. Rinse thoroughly and repeat. For best results use at least twice weekly or as directed by a doctor. ©