No. “Black henna” is not possible from the henna plant. “Black henna” is not jagua fruit. “Black henna” is an illegal substance made with para phenyline diamine based synthetic hair dyes and then packaged, sold and applied [illegally] to the skin, and washed off, to achieve a quick and dark colour on the skin. It is highly dangerous and reactions can be in the form of visible rashes, swellings, anaphylaxis, internal organ failure or death