This doctor-developed, clinically tested formula works in four ways to gently detangle, de-flake, soothe and nourish the scalp and hair. Using a proprietary Therapeutic Psorzema® Herbal Blend plus healthful vitamins and botanicals, this shampoo and conditioner calm a dandruff-prone, itchy, irritated scalp and locks in moisture to replenish the hair from root to tip.