Funnily enough Ron stated that his favourite polish was Meguiar's!Ron is an awesome guy. But one thing to be aware of: As far as I know, there's no such thing as a commercially available pure carnauba wax. It's so hard that it comes to the factories in pellets that are as hard as plastic. They mix it with petrochemicals to soften it.
Of course, that doesn't make it bad stuff; there are petrochemicals in a ton of things we use on our guitars.
No pumice and no silicone are, however, good ideas!
Jump to 11:20
You are quite right Les, you defiantly need some "safe" solvent, now I have to lament my clumsy comment. Fortunately for us there is a market for "nitro safe" polishes for vintage vehicles.
Pure carnauba wax is readily available in flakes and pellets. It's widely used in home brew cosmetics and is a substitute for beeswax across many applications.