Canada and USA — FREE shipping on orders over $%amount% CAD.
Packages shipping daily with alternate carriers.

Tartaric Acid

Tartaric acid is an optional addition to the alum mordant process in natural dyeing. it is used to soften and protect protein fibers and brighten shades. It is used like cream of tartar but will give different shades than cream of tartar (cream of tartar is the salt of tartaric acid).