DIY Leather Cleaner & Conditioner: Simply mix up 1/4 cup olive oil, 1/2 cup white vinegar, and a couple of drops of your favorite essential oil in a clean empty spray bottle and lightly spray your leather surface. See how dry and cracked it is? *Before doing this, I recommend trying it in an inconspicuous place first...just to make sure it is safe for your leather.
How to clean leather couches - myCleaningSolutions.com
The couch before and after I conditioned it using EVOO. I've used this method for the last 4 to 5 years to condition our leather couch and love seat. It really conditions the leather well and I've never had any issues with the olive oil leaching back up to the top of the leather. www.thetatteredrabbit.com