Another good leather restoration product available through Tandy Leather named Aussie Leather Conditioner and mfgr'd by Fiebing Co -
www.fiebing.com. This product contains beeswax and has the consistancy of vasoline out of the jar.
Rub the product on the leather and let soak in/dry over night then rub off with a soft cloth. I'm now restoring an old Leg-O-Mutton case for a customer and currently have three applications of this product on the LOM case. You'll never bring the leather back 100% to new; however, this product does a very nice job with leather restoration.