Psoriasin Shampoo works two ways to relieve and control stubborn symptoms and discomforts of psoriasis, seborrheic dermatitis & 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, fragrances, & preservatives.