Illuminating acid dyes work effectively when combined with discharge paste as they have a high resistance to bleaching agents. A concentrated stock solution of 5% dye using hot water and vinegar (or citric acid), is combined with up to the same amount of discharge paste. This paste is applied to the ready dyed fabric with a brush or stamp. When dry, the discharge paste is activated by pressing the fabric with a hot iron on a steam setting. The final stage is to set the replacement dye colour using the traditional steam fixing technique, before rinsing away the surplus dye and chemicals in a solution of synthrapol at 5ml per 5 litres of water.
The image shows discharge printing with illuminating dyes on black velvet. Learn more about discharge printing from our Blog.











