Originally Posted By: The Critic
Isn't this one of those el-cheapo ebay kits?
Yap, it was. I forgot how much i paid, probably under $40. I guess it must have been defective film that went on the plastic bumper. Now, I remember I have a rear bumper protector too ("genuine" toyota) and it looks great. So, it's not plastic paint issue.
However, I did some searches on this topic and consensus is the films will yellow and deteriorate in sun sooner or later. Older 3M product was very notorious for that.
The lesson I learned is to remove the film at the earliest sign of deterioration and not waiting till it's too hard to do it.