Flip (not his name) is a retired machinist and rancher/farmer in, I think, Minnesota. His wife raised and showed Percheron horses, the same as did my grandfather on his farm/ranch in South Dakota. The story as told to me by Flip was that he used to get this leather conditioner that was made by a local farmer for use on their tack, harnesses etc. There are no silicons in it but rather carnuba waxes. The guy started making it commercially, with I believe Flip being one of his firs distributors. I used to pay $4.95 for a small can of it and, as Flip told me, use it sparingly because it goes a long way. I found it on line some time ago but being packaged in Chicago and don't know if it is still the same product.
Well, I brought an old western saddle back to life, used it on all of my leathers, to include old saddlebags and riding jackets, truck seats and all, and took some back to my daughter's home to use on her beautiful Texas leather couches. I probably ordered three sleeves of 4, giving some of it to my friends because it was that good. Flip sent me a note once asking me if I was eating it since so little goes a long way.
I have two small tins of it left which will probably last me a good long time but it is good to know Langlitz Leathers is also excellent product. The stuff they sell at the auto supply shop is filled with silicons and to me not good. When I have my vehicles detailed I tell them not to touch the leather seat.