Efficacy: Nourishing liver and kidney, hair-blacking,  nourishing yin and blood.  Suitable for people who often stay up late, suffer from kidney deficiency, white hair and hair loss, insomnia and dreaminess, dry eyes, and use computers and phone often.
 
Chinese yam: invigorates the spleen and appetizers
Poria: dehumidification, invigorating the spleen and calming the nerves
Black mulberry: Nourishing yin and nourishing blood, preventing hair loss and white hair
Black beans: Tonify kidney yin deficiency, nourish blood and black hair
Goji Fructus: Liver and Eyesight