Originally Posted by k3n
That's interesting Prism - I use vinegar because that's what my Mum told me! So it probably 'works' on my batiks only because the excess dye soaks into the water - the vinegar is superfluous?
Probably. Even batik dyes are primarily chemical in origin these days. Most likely you are just rinsing out excess dye from the fabric and the vinegar isn't doing anything. You could divide yardage in half, rinse half in plain water and half in vinegar water to see if there is any difference. My bet is there won't be any difference.