These synthetic vat dyes color natural fibres (not recommended for wool) through a process of oxidization and
reduction. They are extremely strong dyes and their washfastness and colorfastness are excellent. Reduction is achieved
at a temperature of 120° – 160° F. Cloth immersed in this dye will develop the true dye color once removed from the
bath and exposed to the oxygen in the air. Vat Dyes may also be used as a ‘discharge dye’. They will effectively remove
specific dyes from previously dyed cloth and replace it with its own color. This is very useful when using resist
techniques like shibori.
