I keep Renaissance Wax on hand for preserving metal and wood on firearms. I also use it to polish and preserve leather. It is non-penetrating, non-softening, not slippery, and highly water repellant. Renaissance Wax is highly purified carnauba, the main ingredient in Johnson Wax and Simonize Car Wax, without the yellow and stink. Applied with the fingers, a little goes a long way.