Originally Posted by patrickBOOTH
Essentially I don't think it is much more than a solvent heavy neutral polish. There's some solvents in it that give it the creamy texture and stuff, but I think that degrades the leather when used like people tend to do: too much and on the vamp of the shoe. Essentially I have had many pairs of shoes go in the garbage that saw nothing but love with this stuff and other Saphir products. Shoes that I have had since before Saphir was really a thing are in better shape than newer reno loved shoes that went kaput. Some shoe maker's I have also spoken with have said similar things about reno.
I mentioned this in the shoe care thread, but FWIW, I had a pair of Saint Crispins destroyed with too much Reno. The top layer of the leather kind of rubbed off.
I still use it, but very, very sparingly, and infrequently. I mostly use AE conditioner and cleaner, TBH. Not very sexy, but I feel safer and more confident with it.