Rawmest Indigo Powder Is A Natural Dye Which Is Very Famous Now Days For Coloring Hair Black. Many People Know It As Black Henna, But It Gives A Blue Dye. When Used With Natural Henna Powder It Gives A Dark Brown To Shiny Black Color. Generally It Gives A Blue Dye Even Though It Looks Just Like Henna. It Is Also Used To Dye Clothes And Get A Denim Blue Color. In Botanical Language It Is Known As Indogofera Tinctorial. The Indigo Powder Is Made Using The Leaves Of Indigo Plant.