Did you know rubbing zipper teeth occasionally with wax will keep the zipper working smoothly? The stub of a candle will work well; or, even bakery waxed paper sheets.
Ensure your zipper is clean and then apply wax to the teeth and the slider; or rub with waxed paper sheets to help them move more smoothly.
Apply monthly on items you are wearing often and every few months for items used less frequently.
