3% salicylic acid. Clears and helps prevent flakes and scalp build-up. Starts working after just one use. Dandruff, psoriasis, seborrheic dermatitis. No. 1 dermatologist recommended brand. The No. 1 dermatologist recommended medicated shampoo brand. Neutrogena T/Sal Maximum Therapeutic Shampoo is recommended by dermatologists to relieve itching and flaking associated with scalp psoriasis, seborrheic dermatitis and even common dandruff. Contains maximum strength 3% salicylic acid. Breaks down crusty, flaky scalp build-up. Keeps working long after the shampoo is rinsed off. Gentle enough for everyday use. Alcohol-free. Fragrance-free. Color-free. Preservative-free. Made in USA of domestic and foreign components.