When buying leather, the best thing you can do is ask the people who you buy it from, what the manufacturer recommends for leather care and cleaning. Don't forget to ask what other products may work well for leather care too, as there may be something you're more comfortable using. Also ask what the product does to and for the leather.
While still alive, leather on the animal, fish, or fowl is maintained in situ. (It's their skin) The oils that keep leather conditioned and help remove dirt and grime from the skin of the animal are produced naturally by their body.
Once leather is processed, these