Jacquard Synthrapol Prewash and After Wash Liquid detergent for Dyed or Painted Fabrics, Industrial Strength, pH Neutral, 8 fl oz

It worked great. I hand washed my fabric and when I rinsed it, no more dye bleed.

Very disappointed that this did not work to remove colour's runs on my cream ottoman cover. I followed directions to the letter and it made absolutely no difference to intensity of number of runs on item I ended up using two other methods to remove/ reduce runs with limited success but still, these methods made a positive difference unlike this product. As synthrapol 's primary use is for stripping oils and finishes and removing excess dye after hand dyeing ( which I do) I will reserve judgement until such time as I can use this for other applications. 2 stars down as it did not work for one process mentioned above 3 stars as I didn't realize a product like this existed until I researched how to remove red colour's runs off cream cotton upholstery fabric, but I do have other multiple uses for this product It's not available in Australia except through Amazon from what I can see. So my 3 stars are high hopes ,it will make dyeing a lot easier with better results. I have about 30 items to dye, so will update once this is done

Used it for years to prevent staining from spare dye. Good quality. I use it after every steaming process

I use Synthrapol to wash anything I've knit with yarn that I've dyed. Synthrapol gets the excess dye out and suspends it so it doesn't absorb back into the knitted item. It works good on some stains you might get on your clothes, too.

Brilliant for things like silk scarves. Ensures you have no colour run.