How to fix a stuck zipper

One of the kids fall jackets wouldn't zip this morning so I went searchin online for frugal ideas on how to fix the broken zipper. Here is what I found and it worked.

If your zipper gets stuck, rub some lip balm on both sides, it's sure to work.

source

I tried it and it worked! Also a candle, a bar of soap were also mentioned.

What a easy and frugal way... much easier than replacing the zipper and cheaper than buying a new jacket.