Not sure if I can post this but here are instructions on making cool ties and it does state to use over and over. They are filled with polymer crystals. Wet the crystals and they become a gel-like substance. Dry them out and they return to the rock-like crystals. I have made hundred to send to the troops in Iraq. Be careful how much you use in the tie as if overfilled, the gel will ooze out.
http://christmas.organizedhome.com/g...gifts/cool-tie