The use of Natural Indigo Powder (the leaf of Indigofera tinctoria, or what is commonly called true indigo) is among the safest ways to achieve healthy, dark brown/black colored hair without the use of synthetic and/or harsh chemicals. The use of Indigoferrin (pure crystalline indigo) has been widely documented for its ability to restore the texture of your hair while giving your hair an all-natural color and sheen at the same time. Because of these benefits, many people prefer using Ayurvedic Indigo Powder For Hair on their hair as it promotes healthy hair growth when used on a regular basis.