I put mine on in 2009. And re-applied only to the rear bumper last year. It wasn't all that bad just starting to dull out.
The rest of the areas, front bumper and hood scoop, has held up great.
I think I was going at the rear bumper too much with the pressure washer. Between that and the soaps the car washes use it just wore off a bit.
FYI I used denatured alcohol to to prep.
Learned about the stuff here. I was in looking at some duplicolor the other day and noticed they have a spray on rubber/bumper restorer. Seemed like more of a paint than a dye. I figured if it was worth a sh&t I'd have read about here or the detail forums I visit once in a while.
But ya.... you're bumper is faded...
