That $9 tin of beeswax paste from the hardware store saved my leather binding
I was fighting with flaking leather on a 1920s hymnal I was rebacking, tried expensive commercial conditioners and they just sat on top. Picked up a tiny tin of Howard Feed-N-Wax on a whim in Des Moines, rubbed a thin coat on a test scrap and let it sit 24 hours. That cheap stuff softened the leather just enough to handle without crumbling, and it didn't darken the color like the fancy stuff did. Has anyone else had luck with hardware store products on book leather, or am I just getting lucky?