100% Pure Indig Powder for Hair Indigoferra Tinctoria - 100grams packnNatural hair Dye to Color your Hair BlacknApply Henna to Your Hair First and then Indigo For Better ResultsnNEW FRESH 2012 CROPn100% Pure Indig Powder for Hair Indigoferra Tinctoria. Natural hair Dye to Color your Hair Black. Apply Henna to Your Hair First and then Indigo For Better Results. No Chemicals or PPD Best way to cover gray hair to black.