Jason Dandruff Relief 2 in 1 Treatment Shampoo and Conditioner treats & controls dandruff. Jason Dandruff Relief 2-in-1 Treatment Shampoo + Conditioner is a dual action, medicated formula that cleanses and conditions in one easy step while controlling scalp dermatitis and mild psoriasis. Active ingredient Pyrithione Zinc control dandruffs, eliminating flakes and itchiness. Wheat Protein strengthens the hair while nourishing Jojoba Oil adds weightless softness and manageability. Hair is soft, conditioned and flake-free. Safe to use on all hair types. Vegetarian.