your right beeswax has been used for thousands of years on leather and many other products. Mostly to seal and or waterproof the product its applied to. I've never read or heard of its primary use being to prevent NFO from going rancid, if it does that's great too!! . Beeswax rocks don't get me wrong i use it for about a half dozen different potions mostly very old concoctions for wood leather textiles and such.