There is sufficient medical information on the relationship between hair and internal organs in China thousands of years ago. Huangdi Suwen recorded in the “Six Sections of Zang Xiang Lun”: “The kidneys are responsible for stinging, sealing the internal organs, and the essence.” This is the place where the flower is growing and filling the bones, which is the Shaoyin in the Yin and is connected to the winter energy. “Hua” means the glory is exposed. The nutrition of hair comes from blood (the so-called “hair comes from excess blood”), but the vitality of hair is rooted in kidney qi.
