Indigo Powder is a time-honoured Ayurvedic herb rooted in centuries of traditional healing — with archaeological evidence of indigo-dyed textiles dating back over 4,000 years to the Indus Valley civilisation. Derived from the dried and finely ground leaves of Indigofera tinctoria, it is a completely organic gift from nature for dyeing hair — used in conjunction with henna to achieve a variety of shades from rich black to dark brown, or used on its own to darken existing brown or red hair.