A powdered leaf that is traditionally used to dye the hair and the skin red. Henna has been used by women for thousands of years to dye the hair, the fingernails, the palms and the soles. Men too used it to obtain a red hue in their beards. It comes from a small, attractive shrub with leaves of a pale green colour. Its white flowers give off a sharp odour. But it is the leaves which are dried and crushed into a greenish-yellow powder and then used as the colourant.