Acid dyes are used to colour silk, wool, feathers, other protein fibres and nylons, and nothing does it better! Extremely brilliant and colourfast, Jacquard Acid Dyes are highly concentrated, powdered hot water dyes that produce level, uniform colour during immersion dyeing. They exhaust well and won’t bleed or fade with washing. Of all the colorants in the world, acid dyes are known to produce the most luscious colours of all, and Jacquard’s palette is unsurpassed for quality, intensity and consistency. Available in 40 colours.