The power of Plexus
 

Well I took in all considerations about plastic cleaner for the rear window. I used Plexus and I will not regret buying it. If you look at the first picture of my Boxster you will notice a yellow tint and line running throught the middle where it bends at. Now after I used Plexus it took some of the yellow away but it made the yellow line disappear. I do not know how it did it but for anyone looking for a rear window cleaner but Plexus.