It can even be used to remove dye from fabric dyed incorrectly. Suitable to use on Fabrics Cotton Linen Wool Ramie Rayon Dye Projects Removes or reduces existing fabric colour prior to dyeing when trying to change the colour of fabric from one colour to another.
Rit Color Remover Powder 2 Ounce, 6 Pack
Sewing Thread
Rit Dye Color Remover on Whites? : r/dyeing
Rit Dye Color Remover - Artsavingsclub