I have wondered how yoyo wax or other dressing might perform on the string. I always suspect slip or lack of it first. Some of my vibration motors strings seemed waxed.
For sliding and plastic gear issues on things that should remain dry, graphite can be messy. So can talcum and doesn't always help.
I use a plastic safe teflon dry lube (spray evaporates). It looks like a very thin waxy dishwasher mineral haze at first, but can be polished off, leaving surface VERY slick and bone dry (or left on to spread with contact) (originally for airplane de-icing & build up prevention. It actually repels dirt when thin too )
It's my go to for my watchmans shanty. (to be honest, after two applications a few months apart, it still doesn't need it again after 7 years)
Id keep it off my string and belt track on pullies and use sparingly too. My last can lasted a decade used very often but sparingly. A drop'll do ya really; I rarely spray out more than an extension tube full and apply drop from it that way.