Grandcherokee,
Maybe you could try it more on different cars to see if maybe it was something different about the other
headlights, material or wax coating that was making it behave differently.
Hey another red liquid that takes care of oxidation but on metal contacts is Caig Deoxit. It's also quite expensive though not as expensive as that stuff. I wonder......
I've got some of it, maybe I'll try it on a oxidized
headlight and see what happens. Gotta read up though and make sure it is safe on polycarbonate.
As for
plastx, I have it and I believe it is abrasives taking care of the oxidation. The same as mothers plastic polish which I also have, which is milder than
plastx it seems.