When I was a kid, everything got Armour All. Then I heard that it dries things out. Don't know how true, but figured I would just keep it clean and stay away from all those chemicals.
I try to use natural wax type products for leather.
I use to Armour All everything in my car when i was younger. I only use it on the door panels of my wife's Camaro and parts of her dash board. I lightly saddle soap her leather seats.