In traditional Oriental medicine practice, the Shou-Wu formula is primarily a liver tonic for men and women. It helps to restore normal hair color for those who are turning gray. It also strengthens tendons, benefits the eyes, and nourishes blood. It has long been the favored ingredient in most Chinese herbal extract supplements all containing various amounts of Shou Wu. The active ingredient is Shou Wu (Radix Polygonum Multiflorum) root and it must be taken for several months in order to restore normal hair color. It is often prescribed with Chinese Angelica root, wolfbery fruit, and dodder seed as in hair beauty pill or formulas for restoration to normal hair color and prevention of hair to gray.