Originally Posted by jfelbab

This is a restoration project. If the car is mechanically in good condition and you plan to keep it for a few more years, I'd suggest finding a local leather restoration tech.

If you don't plan on a restoration, you might contact a salvage yard and look for a replacement skin for that seat.

If your plan is to just live with the damage, I'd suggest not using a conditioner on it any longer. A conditioner will cause the cracking and peeling to expand rapidly as the oils get into the leather and loosen the bond to the remaining topcoat.. Only use a water based protector. There are several manufacturers of these leather sealants. Just avoid oily or waxy products. Also any products that contain silicones. The protector wont make the damage look any better but will slow the deterioration a bit.

How old is this vehicle?