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

Worked great for a nylon puppet fleece that I use. It helped give an even dye job and is well worth the price. There was no unpleasant odor or anything. Love it!

Worked great to remove color blotches from cotton knit shirts discoloration from laundry. Brand new shirts I thought ruined. Soaked in hot water, following instructions on bottle. Color blotches were gone! Very happy with results.

Though I initially bought this for dying fabric, I find I used it often on brand new designer clothes to set the dye from THEIR processes so I can avoid having to be so "specific" with my basic laundering. Most of my clothing tags say "launder separately, inside out, cold/cold delicate wash" I have found that more often than not, it is due to dye color bleed NOT the fabric itself...I don't know about anyone else but I don't have time to launder every single item of my wardrobe separately lol...its not like I only wear a couple of different colors. I actually wear a lot of different bright "jewel tone" colors along with the basic darks so simply separating like colors is not recommended for many of these items either. So, when I buy something new, I wash it in this FIRST, according to instructions until I have no more bleeding. I have yet to have color transfer issues on my clothes after using this and mixing my laundry so I would say this works like a charm to set dye! AWESOME to keep your blacks actually black as well. :) Of course, once I treat my new clothes with this, I do wash on delicate, inside out, on cold/cold but not because of color run but just to keep them their brightest and darkest for longer. (I use detergent specific to darks etc. as well...I find doing these things and starting with this, my clothes look new even a year or more later, with no fading.)Using it this way, it makes it well worth the price! (because lets face it, it is pricey for such a small bottle...but not when you calculate the savings of your hard earned money forked over for a new wardrobe sooner just because of fading issues like your favorite black pants are now gray! This way you can at least hang onto things until the styles have changed enough that you WANT new clothes lol.) When dying your own fabrics, well...lets face that too, few hobbies are cheap lol so it is what it is price wise.

I use this every time to wash a newly finished quilt to prevent bleeding. So far so good.

I am a knitter who loves to purchase indie-dyed yarn. Unfortunately, it hard for some dyers to fix their reds. This product is great to diminish the amount of red that leaches into the washing water. If the yarn really runs, I do not let it soak in a Synthropol bath for 10 min., per instructions. (Too much dye runs into the water and can re-deposit on yarn.) I let yarn soak its first Synthropol bath for 3-5 min., then for 10 min or longer in subsequent Synthropol baths. Usually the bleeding stops after 3 baths.

This is always good to have on hand especially when you are washing something that you don't know how much it will run. I used it for an antique quilt that needed cleaning and included some red fabrics in the patchwork. You don't need much so this small bottle goes a long ways. None of the red bled in a cold water wash.

The product was exactly what I needed for a dyed item that kept bleeding the dye.

I had a disaster. Navy blue fabric in a hand quilted quilt I made bled into the off-white fabric making it turn purplish gray. What a heartache! I looked online and people said this would work. I had my doubts because I had put it in the dryer before I realized the fabric ran. IT WORKED. I put the quilt in the washer with hot water and added the correct amount of the Jacquard Synthrapol. I soaked the quilt in the solution for 8+ hrs and the dye came out and the quilt was saved. I'm so happy with the results. I will always have this on hand just in case.