Originally Posted by whiteminiman
The liquid stuff with an applicator brush (I used McNett ZipCare) is very messy, but seems to work ok...
Look at the label. I believe McNett uses silicone as the lubricant (I think). If so, make sure you limit the travel of the stuff to the area with the teeth, and where the slider runs. If you get the stuff on and into the suit fabric, you'll have trouble sealing a new zipper in after its been stitched.
Personally, I stick with wax. McNett has a little orange stick of hard wax that works pretty well. Lasts quite a while, too (long enough that I usually lose it before wearing it down.)