Waterproof Zipper Lubrication...
Waterproof zippers are much more precise than regular zippers, with closer tolerances. Occasional lubrication hugely reduces slider drag. Makes zipping much easier. (You'll feel a small difference in 'slider pull' everyday in ease-of-use and off-and-on convenience.)
Teflon "chain saver" is the best way to make waterproof zips work faster and easier. This lubricant is applied to every Aerostich waterproof zipper during manufacturing. We experimented with other lubricants -- this one is the best. (Formerly labeled as 'Teflon Multi-Use Lubricant' by its manufacturer. Why did the name change?...formula is exactly the same.)
One quick zipper application provides months of lubricant effect, even if exposed to occasional rain. So ignore the packaging. (Yeah, it is also excellent for levers, cables, latches...and even chains.) A little bit goes a long way.