The efficacy of Wu Hair Pill is to nourish Yin and strengthen the brain, cool the blood and darken the hair. It is used for juvenile alopecia. Wu Fa Pill is a proprietary Chinese medicine, which is composed of Radix Rehmanniae Praeparata, Radix et Rhizoma Dioscoreae, Radix Polygoni Multiflori and Radix et Rhizoma Polygoni Multiflori. In this formula, Radix Polygoni Multiflori has the function of tonifying the liver and kidney, benefiting the essence and blood, as well as making the beard and hair black and strengthening the muscles and bones. In addition, Black Sesame Seed, Radix Rehmanniae Praeparata and Chasteberry can nourish the liver and kidney, and benefit the vital energy, nourish the blood (replenish the body’s vital energy and blood) and make hair black. Wu Fa Pill can be used to treat juvenile alopecia caused by insufficient endowment (inborn constitution and poor functioning), or overwork, deficiency of yin and blood, and heat in the blood (which is the deepest stage or location of the disease among the four phases of warm disease, Wei qi and Ying qi), which is seen as premature graying of the hair in juveniles, whiteness of the hair, and hot flashes and night sweating (abnormal sweating after going to sleep and ceasing when waking up), etc. It should be avoided with spicy food. It should be noted that, avoid spicy food; should not be taken by patients with colds; taking the drug for 2 weeks or during the period of no improvement in symptoms, or symptoms aggravated, or the emergence of new serious symptoms, the drug should be stopped immediately and go to the hospital. When using medication, it is necessary to be guided by a traditional Chinese medicine practitioner to use the medication, do not use the medication arbitrarily, in order to avoid adverse consequences.