I have one of those 2005 Subaru Forester's where the lower body panels and front and rear bumpers are unpainted plastic. They've faded quite a bit over the years and I tried the BFTTR on the top section of the rear bumper where the worst of the fading exists. Unfortunately, it didn't make any change.

I only applied one coat. I can snap a pic soon to share, but any other suggestions on whether or not there is a product that will kill the fading for a bit would be appreciated!