Does anyone have any experience oiling up their old dry clay chips. I've got a really dry chip that is in need of some TLC and moisture. I've used baby oil before to restore luster to dry clay poker chips but wondered if anyone has any other product that my be more archival. Has anyone used anything else? I was thinking some sort of wax, like car wax? Any suggestions appreciated. No KY jokes please.

Thanks,
Westen