Saddle soap and any good leather conditioner.
Jean: I swear by this stuff:
Here is a helpful video: https://www.youtube.com/watch?v=BSX3VuYZhPs
I use the automotive leather cleaner. It's designed for leather that probably isn't as high quality and gets more abuse than household furniture. I bought my sofas in 2009, they still look new.
Hi Jean, this is a video by Bob Vila, so at least we know our leather furniture won't dissolve when we use this method, hope it helps you
Use a cleaner made for leather.
Here's my post on how I clean mine that might help you - https://chascrazycreations.com/how-to-deep-clean-your-leather-couch/
Car parts store carries a 2 part leather cleaner and conditioner for leather car seats.
You could take a damp cloth and wipe it or pledge it