HOW TO FIX ANY ZIPPER PROBLEM
From time to time we have all had a problem with our zipper. Wherever it has broken off, got stuck, or just not zipping the correct way. Here are some solutions to those problems.
Zipper is stuck - Take a pencil and rub the pencil tip on the teeth. If that doesn't work try a lubricant. Look for something that is not oil based like Windex or lip balm.
The teeth don't close - Sometimes the above trick will work. If that doesn't work, the slider might not be working. Make sure no piece of cloth or thread isn't stuck in the zipper. Look at the individual teeth. If any of them are sticking out, grab a pair of pliers and move them back into place so they're all straight.If the teeth are straight, and clean, take a look at the slider itself. Over time, the slider starts to come apart. Take the pliers and try closing the slider together until it catches the teeth again.
Zipper won't stay up - Slide a key ring through the zipper pull and over your pants button. This is obviously a very temporary fix, you will need to go out and get a new zipper, don't worry they are cheap.