I have a bag that is in really bad shape. The leather is so dry and brittle that parts are crumbling and cracking. I started wondering if there is a point beyond which it isn't salvageable. I googled dry brittle leather and found this article, which I thought was pretty interesting. Then I started wondering about the brand mentioned, and when I googled that, I found someone who said they liked it better than Leather CPR or Blackrocks. So now I am really curious! Apparently, it smells good too!
http://equestrianhow2.com/2012/01/04/how-to-restore-dried-tack-and-old-leather/
http://equestrianhow2.com/2012/01/04/how-to-restore-dried-tack-and-old-leather/