Cool Indigo Color Hair References. Indigo powder for hair | indigo hair pack watch on (indigo powder itself does not work effectively on grey hair, it has to be applied either by mixing with pure henna or after applying pure henna (2 step method) on your hair. Web benefits of indigo powder for hair.

Web indigo alone can impart unpredictably bright and typically not desirable colors, such as green, purple or bright blue, depending on the base hair color. One of the primary benefits of indigo powder is its ability to impart rich, deep color to the hair. It is mostly used in combination with henna to neutralize the red color.