You may need to move the zipper back and forth as you try to pull the thread or hair out of the zipper.
You may want to replace a zipper that has a lot of missing teeth.
Soak a cotton ball with vinegar. With the garment flat, run the cotton ball up and down the zipper. Make sure not to get it on the fabric if you think it may bleed. Apply it to both sides of the zipper, as well as the inside of the teeth.
The soap will help the slider move up and down more easily on the zipper. Another easy option is petroleum jelly. You can also use a bit olive oil, but be careful, as it could stain your clothes. [7] X Research source
You may need to wash your clothes after using this method, if you’re not careful where you sprinkle the powder.
For the wax paper, tear off a small sheet of wax paper. Make sure it’s wax paper, not parchment paper. With the zipper open, rub it on both sides of the zipper. Test to the zipper to see if it helped. If it didn’t try it again. For other types of wax, rub the wax onto the zipper with the zipper open. Wipe off any excess wax from the fabric. Blow over it with a really hot hair dryer, making the wax melt and allowing it to penetrate the teeth better. Once it cools, run the zipper back and forth to test it.
