henna powder for hair dyehenna a leaf of a small shrub of an ildian plant dried and powdered rsed as hair dye.directions for rse:rnpack henna pouch in to bowl and pour water in it to make the paste knead it well breaking all lumps.apply the pase with a brush and a thin toothed comb to hair from root to the top parting hair to small bunches leave no hair untinted apply repeatedly to the b orders of the hair on brow do not let the paste remain unused for long,as its efficiency reduces.