**2.7. Dye productions**

Dye can be produced from leaves, stem, bark, wax, and roots of jatropha plant [21–23]. The leaves and stem of jatropha produced brownish dye when boiled in water as an extraction process [20]. It is based on experience of Tharu tribes, Devipatan division. The dye has no irritative and/or toxic effect on skin. Bark contains tannins that produce purple color in dye production [22]. Meanwhile, combining wax and bark produced dark blue dyes. Roots of jatropha could produce yellow dye. The dye is used to dye domestic threads, ropes and clothes during ceremonial occasions [23].
