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I bought a glass jar of antiques furniture wax.
It is transparent, and it darkens the color a bit (like when you wax floors) but otherwise you cannot see or feel it.

It cost only 12 euros for a...

You won't know until you try it: do an experiment on some wood scraps and let us know :)

Out of curiosity: do you actually like the high gloss look?
I always use wax for the outsides, and CA for...