The roots of this plant that belongs to the ginger family, are used for dyeing with and without a mordant. It is one of the easiest dyes to apply to both cellulose and protein fibres, but using a mordant will improve light fastness remarkably.
Can be used with the Low Impact dye method. Can be used without heat, or as a solar dye.
Active dye compounds: Curcumin
Keep in a tightly closed container, stored in a cool, dry, ventilated area. Protect against physical damage. Maintain a constant temperature not to exceed 24° C. (75° F.). Containers of this material may be hazardous when empty since they retain product residues (dust, solids); observe all warnings and precautions listed for the product.
Heath and Safety
Do not ingest. Do not breathe dust. Wear protective gloves, safety goggles and a dust mask when handling fine dye powders and mordants.
Possibly harmful when swallowed or inhaled
Natural dye powders are no known environmental concern. Mordants and mordanted dye baths should be disposed in a sensible way according to your local waste disposal laws.