The leaves of the henna plant contain a reddish-brown dye called lawsone, the substance responsible for colouring the skin in a henna adornment. Two to three times a year, the leaves can be harvested, which are then dried and ground into henna powder. This powder is mixed, usually with water or lemon juice, so that a paste is formed which can dye the skin. 



! Sometimes, this paste is mixed with synthetic dyes in order to make 'black henna'. Black henna does not exist! Unfortunately, however, there are products on the market which are sold as "black henna" and which can be harmful to the skin. This brings along a lot of confusion concerning the use and safety of henna. Wrongly, because henna is harmless and in some cases even beneficial to the skin.