I am a simple, stupid idiot that you might hate, but this is too complicated for me.
This is what I do:
I just buy a litre of rapeseed, which costs approx 4 $/litre and that's it. Just apply to your leather and you will be fine and your leather smooth and shiny.
But, I might be superduper wrong. You might want to pay way much more for complicated and elaborate mixes of expensive lotions to get the right solution for something that is EXACTLY what you need. You will be happy. HAPPY