I ONLY use rubbing alochol to clean my pipes, nothing else, except once in awhile I may run a cleaner dipped in Brandy tru a stem. On my pipes, that come as Natural, or ones' I have removed the finish on to make them have the Natural look, I use Extra Virgin Olive Oil in place of Wax. It is great stuff on an old and neglected Estate pipe, after cleaning. I put a coat on, let it sit for a few hours, rub it in well and apply another coat and let it sit for overnight. Then I rub it with a clean dry flannel and it is good to either smoke or sit in the rack. In 18 yrs, I have never had anything go Rancid. Just my experience I guess