Originally Posted by HotBowMom
Any ribbon that is 100% polyester will kork. Not nylon (which will melt) or any natural fiber like cotton. It's the molecules in the poly that heat up and become pliable. When wrapped around a dowel, the warm ribbon reforms to the shape of the dowel. That's why if you wash the bow in cold water, it keeps it's shape but in the dryer the ribbon will flatten back out.
Sorry to get so scientific but I've found customers don't understand why you can wash a korker but not dry it.
I'm all for your scientific answer, thanks!!
I just wish I had more success