Having spent a good deal of time researching and reading forums, to include this one, I have found that there are plenty of threads on making leather conditioners , but not many actual recipes. People act like it's a secret or are elusive in what ingredients and ratios they use.  It's not a secret, I never understood why people act like its some kind of proprietary info on how they make  conditioner. It's not like most/any of them are trying to sell it to make a living or anything. Plus its not