The main function of Siwu Decoction is to replenish and nourish blood. Hair growth is related to the prosperity and decline of essence and blood. Therefore, people with abundant kidney qi will have dark, thick and shiny hair. People with sufficient blood qi will have thick and shiny hair. It can be prosperous and beautiful.

Men can also nourish blood and regulate sperm, and it also has the effect of aphrodisiac. Siwu Decoction is a prescription for replenishing blood. It replenishes qi and blood and does not affect hormone secretion. If men have problems such as pale face, easy fatigue, lack of qi and blood, anemia, etc., they can also use Siwu Decoction to replenish blood, but It is still necessary to see a traditional Chinese medicine doctor and ask the doctor to prepare the medicine according to his constitution.