Paraffin Wax
I needed some paraffin wax for making water resistant oilskin cloth. This wax was the least expensive of what was readily available and I figured that it would have to be reasonably safe to use because it is intended to be used in beehives. My paraffin, beeswax and mineral oil mix appears to have worked well in my initial waterproofing experiments. I got prompt service and I have no regrets.