An example of red dye is something you put into a solution for coloring Easter eggs.
Many scale-insects are among the most serious of pests, but various species have been utilized by man for the production of wax (lac) and red dye (cochineal).
Perkin also had a large share in the introduction of artificial alizarin, the red dye of the madder root.
Both sexes, but especially the women, tattoo several parts of the person, and the women stain their hands and feet with the red dye of the henna.
NBS in the UK supply a special grade of glycerine jelly for mounting pollen which contains a red dye.
The root of this plant was traditionally used to make a red dye.