Indigo is a green powder that many confuse for Natural Henna. Indigo is mainly for the hair, it will only stain hair, hands and some parts of the feet green then turns blue to black with in 24 hours. Some say It smells like frozen peas.
Indigo (black hair dye or sometimes referred as black henna) has been used as a body art almost as long as Henna. Indigo can be derived from three plants: (Indigofera), which grows in tropical climates, woad (Woad is also the name of a blue dye produced from the plant. Woad is pronounced to rhyme with road) and Dyer's Knotweed (Polygonum tinctorum) which grow in cool climates. All three have the same dye molecule: indigo.
Indigo has been used for body art in Arabia, Egypt, Yemen, Oman, Iran, and indigo from woad was used in Britain, Scotland and Ireland. Persian women are the more familiar indigo.
FD&C Blue No. 2, FDA approved blue coloring is purified indigo. It's in our food, in our soaps and shampoos, in our cosmetics. Most people have had their skin accidentally stained with indigo at least once, from wearing new clothes, or blue jeans. Excess indigo in the fabric will stain skin blue.
Black indigo can be used alone or mixed with natural Henna to make a black Henna, this is usually for the hair. Instead of a red-yellow or orange tint to the hair, it will come out more black or maroon (it all depends on how much black indigo you add) Our Indigo Just Mix with Water immediately add to hair for a dark stain. For really light hair or gray hair stain with natural Henna first, then apply indigo for a natural black look. Indigo will stain hands Black! You do not have to worry about indigo staining anything else. Indigo is sometimes called "black Henna", this is because it is used to stain hair black. This is NOT Black Henna!