Extremely brilliant and colourfast, Jacquard Acid Dyes are highly concentrated, powdered hot water dyes that produce level, uniform colour during immersion dyeing. These dyes are perfect for your next project as they will exhaust well and won't bleed or fade with washing. In addition to yarn, fibre and fabric dyeing, these acid dyes may also be used for direct painting or printing applications, using steam setting. Don't be alarmed by the name - the only acid involved is the white vinegar or citric acid that you add to the dye bath. Acid dyes are known to produce the most luscious colours of all, and Jacquard's palette is unsurpassed for quality, intensity and consistency!