Does black fabric always need to be prewashed? I am about to use some on a quilt and none of the fabrics have been prewashed so I was not planning to wash the black either. The blocks are from a swap so I have no idea if they have been washed or not. I really don't want to ruin my quilt.
Thanks EasyPeezy for asking this question as I have never heard of Retayne or Synthrapol so I learned something new! I do however always wash w/a color catcher.