So it seems everyone has there favorite leather conditioners..... Here's my frustrations...... Firstly: I'm looking for a more natural product to put on footwear. I don't want petroleum based. Secondly: It seems hardly anyone is willing to list ingredients. (Secret family recipes........) Thirdly: there is endless debate of what substances one should put on leather. I've read don't use waxes, since they inhibit breathability and can dry out leather. Others, say don't use vegetable oil bases since they will oxidize and decay the leather. I'm so frustrated feeling left with no choices!!! Any one know of good science that addresses appropriate preservation ingredients? Any help is appreciated!