Wash away scalp irritation, itching, scaling and redness with MG217 Psoriasis Medicated Conditioning 3% Coal Tar Shampoo. Formulated with coal tar, this scalp treatment works by slowing cell growth and controls build-up. Psoriasis, dandruff, and seborrheic dermatitis don't stand a chance against this medicated shampoo. Treat your itchy scalp with this conditioning shampoo that still leaves your hair feeling soft and clean. MG217 has created the broadest over-the-counter psoriasis treatment line available, and all of its products are recognized by the National Psoriasis Foundation.