Procion MX dyes are "cold water dye" that are fixed chemically instead of with heat.

Due to the ability to use Procion MX dyes away from the stovetop, they are also ideal colours for shibori, ice dyeing, tub, and low water immersion dyeing, printing, direct painting, and other alternative dye applications. As a fibre-reactive dye, Procion MX forms a strong covalent bond with cellulosic fibres, making it the most permanent and washfast of all dyestuffs.

Procion MX dyes are typically used with soda ash which can be added directly to the dye bath or used to pretreat the fabric as in tie dyeing and other batch setting techniques. An 18.71g pot can dye more than 450g of dry fabric; bright colours will require more dye and pastel colours will require less. Use on cellulose fibres such as cotton, linen, canvas, hemp, jute, ramie, sisal, paper, rayon and more. 

Available in 43 colours in 18.71g jars, selected colours in 230g and 450g tubs, Tie Dye Kits and a Class Pack.