Product description   As a rare metal, Ash black germanium powder has health care function, use for all kinds of health care and hairdressing.   Product feature   Major ingredient: Metal germanium Content: 500ppm Particle diameter: 200nm Color: Ash black Activation God's image immunocyte, improving blood  carried  more oxygen, emission infrared   Product application   All kinds health care, hairdressing, protection  skin, cosmetics   Usage   At first,  Making nano degree dispersion solution first, as 5-10ppm concentration to make all kinds of function products with germanium