Really, the best thing you can do is wipe your guitar down with a micro-fiber cloth after playing it.
A little carnauba wax on the body is probably ok once in a great while. Some people say avoid stuff with silicone as it can cause “fish eye” on refin, I don’t worry about it. I use a dab of bore oil on the fretboard sometimes.
Also a little wax on metal parts such as tuners may prevent oxidizing.