In the hot climate of the Middle East, the factory of heena, which has the scientific named inernis of Lawsonia, develops admirably. During centuries, the inhabitants of the countries in the Middle East learned how to crush the sheets of heena, and with thus produce a powder. If this powder is mixed with oil of mehndi, it can be applied to the skin. Why would somebody like to put a mixture of oil and powder on the skin? Well, this powder precisely proves to contain chemicals called tannins. These tannins give to the powder sheets crushed the capacity to soil objects touched by the powder. Once mixed with oil of mehndi, the powder can soil the skin. The skin becomes one various nuances of brown.