Indigo (Indigofera tinctoria), a natural herb, is a species of plant from the bean family and is also known as true Indigo. Indigo hair dye is a natural way of colouring hair. You can make the hair as dark as you want without using any chemicals with indigo powder.
How to use: After rinsing your hair, let them dry. Mix the Indigo Powder (100 gms for short hair, 200 gms for shoulder-length hair, 300 gms for long hair) in warm water to prepare a paste. Apply on your hair, using gloves if applying with your hands, or a spatula. Leave on for 45 minutes, or more, depending on preferred intensity .For best result use henna and wash it off and then use indigo powder.