There are products made for restoring the headlight covers on cars that will bring most wraps back to life. It's a tedious detailing process, but it makes old, faded wrap look fresh and bright again.John
It's a brilliant tip! My silver sparkle wrap is yellowish, although in the stage light looks pretty good.
I think i will go for some liquid deoxidizer than some restoring kit. I think its seriously abrasive, and i need sthg mild.