I'll admit to about half an hour of immature jokes when I told my wife I'd ordered this, but after I regained what maturity I ever possessed...
This stuff works really well.
I have a Tele where the B and G strings tended to get caught in the nut (I'm trying really hard not to make jokes right now), but a tiny drop of this in the slots completely eliminated that.
The same would happen with the high B string on my MusicMan Majesty 7. A tiny drop in each slot and in the trem saddles and the tuning is very nearly as stable as on my Floyd Rose-equipped guitars. A major third of upward bending before the plate hits the body then down to sagging spaghetti strings and straight back to pitch every time.
It won't do much good if the nut is poorly cut (it's not stellar on my Player Series Tele, but the MusicMan is definitely done well), but if your strings ping every now and again, this will make a world of difference.
A little goes a very long way. When this runs out, I'll definitely get some more. If you don't have a Floyd Rose on all your guitars, keep a syringe of Nut Sauce in your tool kit.