[Abracadabra]

Originally Posted by cheshirecat79

Most of the time, the "yellowing" is because of deposits that get into the film. It's not actually the plastic, but road grime.

First, clean it with this:
http://www.xpel.com/products/Tools_p...ducts&pn=R1331

Then, seal it with this:
http://www.xpel.com/products/Tools_p...ducts&pn=R1326

If the cleaner doesn't take the yellow out, chances are that it's permanently stained and you'll have to get it replaced. The clear bra is not a maintenance-free solution, but with the right care, it'll last quite a while.

Thanks