Psoriasin Shampoo works two ways to relieve and control stubborn symptoms and discomforts of psoriasis, seborrheic dermatitis and dandruff, while leaving hair looking clean and healthy. 1) Psoriasin Shampoo's medically recognized ingredient breaks down crusty, scaly build-up, helping to eliminate itchy scalp and dandruff. 2) Psoriasin Shampoo provides a deep cleansing formula that removes oil and irritants. Psoriasin is gentle enough for daily use... strong enough to help relieve and control stubborn symptoms. Psoriasin is free of dyes, fragrance and preservatives.