Saw something on TV a couple of weeks ago about a product called Liquid Glass, a car polish. It's supposed to be much better than any car wax, but contains no wax, and is far more durable and protective than wax. I have never used it and know nothing about it. But it seems to have the potential to be used for guns (I normally use Johnson paste wax on mine). Very expensive stuff, $25/can. Any ideas?