Guhl Anti-Dandruff Shampoo has a unique formula using Blue Mallow extract and Guhl's own Hydra-Pyrox Complex (with Zinc) to fight the causes of dandruff, to quickly and effectively remove dandruff from scalp and hair, and to soothe, relieve and relax itchy scalp. Blue Mallow has been appreciated for thousands of years as a medicinal plant whose valuable nutrients are known for their soothing and protective effects. This combined formulation gives long-term protection against the formation of any new dandruff, and leaves hair feeling noticeably fresh, clean, and dandruff-free. Concentrated formula - a little goes a long way!