We got it from Melco, have seen it at Jo-Ann's fabrics. Looks and acts identical to super glue...but super glue will harden poly thread if you use too much. But in an emergency....it works! But only on the back. Have used fray check on the front when we had looped threads that had to be tucked in or cut off-and also on an appique that started to pull off. Next time a wider serge around it! Roland