Extracting natural blue pigment from the leaves of the Woad plant. The pigment has traditionally been used to dye wool but it can also be used in naturally colouring soap. ** Latin name = Isatis Tinctoria ** French name = pastel des teinturiers **
6 ways\Dye Fabric Black Naturally - Natural Black Fabric Dyes -Covering rusty iron nails with vinegar- fill a non-reactive tub with the nail and vinegar. black dye must be set into the fabric using alum to make it permanent.