Rit Colour Remover
Rit Colour Remover is a non-chlorine, reductive type of bleach that will not damage or deteriorate washable fabrics as chlorine bleach will. It is used primarily to remove or reduce color from fabric prior to dyeing, creating a blank canvas for dyeing to a true color. It works on cotton, linen, silk, wool, ramie and rayon. It may have a limited effect on polyester, depending upon how it was dyed commercially.