How do you properly lubricate a zipper to ensure smooth operation?

To properly lubricate a zipper for smooth operation, you can use a wax-based product like beeswax or a specialized zipper lubricant. Apply the lubricant along the teeth of the zipper and then move the zipper pull up and down a few times to distribute the lubricant evenly. Wipe off any excess lubricant with a clean cloth.