Rit Color Remover is used primarily to remove or reduce colour from fabric prior to dyeing with Rit Dye. It reduces the colour to an off-white or cream colour, creating a clean, even base colour for dyeing. Color Remover is suitable for use on most washable fabrics, including cotton, linen, rayon, silk, and nylon. It may have a limited effect on polyester, depending upon how it was dyed commercially.