What Should You Use To Lubricate a Zipper?

Use paraffin or a zipper lubricant, and be careful with strong alkaline detergents and chlorine bleach. YKK says that these cleaning agents dissolve paraffin or an oily film on the zipper, and that they must be used with care.

What YKK says

• For a slider that does not move smoothly, apply paraffin or the lubricating spray “FastenerMate” to the front and back of the elements and work the slider up and down.
• A zipper should be closed and the slider fixed before cleaning. Left open, the tip of the slider may damage the fabric or the tape may stretch or shrink.
• Strong alkaline detergents or chlorine bleaching agents used to remove oil or stains dissolve paraffin or oily film, and must be used with care.
• If a zipper does not work smoothly after cleaning, work the slider up and down several times until it moves smoothly.
• Using the proper heat for the material applies to zippers too: keep the zipper closed and cover it with a cloth before ironing.

What to do when cleaning a bag

1. Close the zipper and secure the slider.
2. Avoid strong detergents and bleach on the zipper area.
3. After cleaning, dry the bag fully.
4. Re-lubricate with paraffin or a zipper lubricant if the slider is stiff.
5. Wipe off any excess product.

If you are unsure what is on a zipper that has stiffened, try a small amount of lubricant at the end of the zipper first and see how the fabric reacts, since oils and waxes can leave a mark on pale cloth.

Where this answer stops

YKK’s guidance covers its own zippers on garments and accessories. Other makers may differ, and the fabric around a zipper can stain from lubricant, so test first.