The role of Lycium barbarum: nourishing liver and kidney, improving eyesight; The function of mulberry: nourishing yin and enriching blood, promoting fluid production and moistening intestines; The function of Polygonatum sibiricum: tonifying kidney and moistening lung, invigorating spleen and benefiting qi; These can be used together, nourishing yin and kidney, enriching blood and promoting hair growth. They can be boiled together or ground into powder and mixed with water.