I used this before dying fabric with Tintex Dye. I can't give full marks because even after 40 minutes of constant agitation, the fabric's original blue colour hadn't faded at all. The solution was cloudy in the end, so I guess it did something. My real goal was to prepare the fabric to accept the Tintex Dye I used after this, which worked perfectly; I'm going to assume that this remover did the trick for that purpose.