Indigo Leaf like henna leaf is one of the oldest beautifier of hair. Ageless beauties as Cleopatra and Nefertiti have used henna and indigo to dye their hair. Indigo is second most powerful and widely used natural dye after henna. When henna and indigo is combined together for hair coloring will result in reds, browns, dark brown color shades.The results may vary, depending upon mix, the process, hair condition, percentage of gray and how you use your henna and indigo in this process. Henna and Indigo application can be done in either a two-step or one-step process. Use together or separately, either way the results are admirable.