Dermarest Psoriasis Max Strength Medicated Shampoo and Conditioner is made with 3% salicylic acid and relieves scalp itch and removes and helps control scalp build up. Dermarest shampoo and conditioner helps relieve itching, irritation, redness, flaking, and scaling due to psoriasis and seborrheic dermatitis. For best results use at least twice weekly or as directed by your doctor. Wet hair thoroughly and massage liberal amount of product into scalp. Leave lather in place for several minutes. Rinse thoroughly and avoid contact with eyes. If the medicated shampoo comes into contact with your eyes, rinse well with clean water. Dermarest Max Strength is a fragrance free solution to treat flaking and intense scalp itch. Product is recognized by the National Psoriasis Foundation. Sold by the each and the case of 24 bottles. Each bottle is 8 fluid ounces (236 ml).