100% Ayurvedic indigo powder is available from Hindya Ayurvedic. No additional chemicals, dyes, or perfumes are present. All types of hair can be safely used with this indigo powder. Indigo can be applied in a single phase or two steps to create a variety of tones, including black, brown, and dark brown. It offers hair a beautiful, natural color without using any chemicals. Indigo cools things down, has a calming effect, and revitalizes hair. Directions to Use 1. For Black Shade, use 100% henna and then next step of indigo at 100% (2 step). 2. For reddish brown, use a 75% henna and 25% indigo mix together. 3. For brown Shsde, use a 50% indigo and 50% henna mix. 4. For dark brown tones, use a 75% indigo and 25% henna mix.