If you find that your tinsel has become curled or matted, there are a few ways that you can uncurl it. One way is to simply hang the tinsel on a clothesline or shower rod and let it dry. The weight of the tinsel will help to straighten it out. Another way is to use a hairdryer on a low setting and hold it about 6 inches away from the tinsel as you move it around. You can also try running the tinsel under warm water for a few seconds. Once it's wet, you can gently straighten it out with your fingers. If all else fails, you can always cut off the curled portion of the tinsel and reattach it to your tree or decoration with some clear tape.