Use this homemade natural hair dye which you can keep overnight and also use it as a live-on hair dye. This colors your hair instantly and keeps your hair black for a while. The ingredients also provides nourishment to your hair and helps hair growth by reducing hair fall.Turn Hair to Black Naturally. You can use it easily and turn white or grey hair to black hair naturally and instantly. This is 100% natural , you can use it every week for good coverage of white hair.