Larder Zippers

Zipper is a clothing accessories, pants, jackets, bags and even serves to open and close the shirt. However, we know that the zippers are very fragile alias fast damaged. Even the shirt, pants, or jacket too expensive yet durable zipper guarantee. Well, I have any tips on how to keep the zipper can be durable.
The trick is: 
Take a piece of wax and rub the teeth of zippers that will be preserved. repeat once again after the zipper zipped. Good luck!