Verdict is out........still
It really appears to need to be high end leather to work well.  On my Suburban leather it never appears to absorb and evening leaving it on well past the instruction time it appears to basically wipe off.  On my BMW X5, same situation with the seats but on the Napa leather dash it appears to make a substantial difference.  Overall that is what I bought it for since that dash dries out quickly in the New Orleans sun and heat, but even with the conditioner it is much more then the 6 months or so it was you could expect, so far it’s once a week to keep it nice.
Rating: 3 stars