Thanks for your words of encouragement El Argentino. In regard to cordovan shell: It is the solvent in shoe polish that can penetrate into the pores of cordovan and cause them to expand. While orange oil is not as harsh as turpentine in that regard, it is still a solvent, so I would say that I do not have a polish specifically designed for cordovan shell. As a side note: I have never seen any first hand proof that the amount of solvent in shoe polish applied to a shoe was sufficient to damage shell cordovan. It would be interesting to see if anyone on the forum has experienced the problem first hand.