This black cover white hair dye works great! It is specially developed for white hair problems. The unique formula can accurately cover white hair, so that white hair can be quickly replaced by rich black, showing a natural jet black color. Rich in a variety of plant extracts and nourishing ingredients, it penetrates deep into the hair during the hair dyeing process, not only is the color uniform and firm, but also nourishes the hair, avoids the hair from becoming dry and rough due to hair dyeing, and makes the dyed hair soft, shiny and elastic. Its gentle and non-irritating characteristics are suitable for all kinds of hair people. It is easy and fast to operate, and can easily get rid of white hair troubles at home.