Henna powder is the powdered root of a single plant. It always makes hair go redder. By mixing it with powders of other plants such as Indigo (also called black henna), or using a non-dyeing powder to avoid having too much red (often called neutal henna), or adding other colourings you can change some of the colourings. We have a leaflet that covers the basics of using henna for hair colourings.
You can download our information sheet here
Our range of henna powder can be purchased here