Well, you could buy Fo Ti Tieng/He Shou Wu(The Gates of Heaven/Black Hair) wholesale like I do. It really be called natural hair instead of black hair because it keeps your natural hair color for a long time. You drink as tea or add it to coffee. It is the only known natural source of vitamin k. Great for surviving plagues, hair regrowth, energy, and longevity. It makes you urinate a lot and passes small kidney stones easily. Great after camping for three months in a nuclear bomb test site