Severerlt bad plastic rear window - anyone offer a temporary method of improvement?

[Frodo]

I can vouch for the Novus---it does a pretty decent job.

The other stuff? IDK...not exactly glowing reviews. 1 OZ???

[Rob175]

Any good plastic polish (3M, meguires etc.) , a good soft terry cloth towel and lots and lots of elbow grease on BOTH sides and you should improve it. Did I mention lots of elbow grease?

[mikefocke]

The Kit that includes Novus 1 and 2 and 3.

3 is a rough texture cleaner that scrapes the top layer with the yellowed color off the window, then 2 a finer roughness cleaner and then 3 a polish. Do the inside of the window too but without the rougher. Then maintain with the polish. Extended mine's life for years.