Procion MX dyes are “cold water dyes” that are fixed chemically instead of with heat. This unique property sets Procion MX apart from all other dyes and establishes them as the undisputed king of backyard dyeing, batik and tie dye. Procion MX dyes can be used away from the stovetop, they are also the 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. Mix the concentrated dye powder with tap water to create the most vibrant colours possible for cotton, linen and other plant-based fabrics (may also be used with protein fibres if acidified). Procion MX dyes are typically used with a soda ash fixative, which can be added directly to the dye bath or used to pretreat the fabric as in tie dyeing and other “batch setting” techniques. Typically, one 2/3 oz/18.71 g bottle will dye more than 1 lb/0.45 kg of dry fabric (very bright colours will require more dye and pastel colours will require less).