How do you apply Rub-N-Buff to resin/Plastic??

I have a few small resin pieces that I want to apply "Rub-N-Buff" to to give them that more authentic metal look, but I dunno if it is a doable thing? Has anyone tried this? I know it has wax in it. Can it be sealed with some sort of clear coat once it applied? Thanks all !

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How do you apply Rub-N-Buff to resin/Plastic??