MG217 Psoriasis Coal Tar Therapeutic Shampoo Maximum strength formula. Fights irritation, itching, scaling and redness. Treats psoriasis, dandruff, and seborrheic dermatitis. Helps prevent psoriasis symptom recurrence. Slows down production and controls build-up of new scales on scalp. Leaves hair clean and manageable with a fresh, pleasant herbal fragrance. Contains Coal Tar Solution USP 20% (equivalent to 3% coal tar). Doctor recommended ingredient.