The best product is
Howard "Feed-N-Wax"
It's beeswax and orange oil, easy to apply and totally safe.
I use is on my Nelson CSS walnut shelves, my old 1928 floor model phonograph and on any of wood products I have.
Of course, don't use it any sealed wood (varnished, lacquered, etc.) but it's 100% safe to use any other kind of wood. It will not change the color.
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