I've got some old toys (both TF and non-TF) that are suffering the infamous photodegredation, or yellowing problem. Some of these are going up on eBay, and I was trying to find ways to reverse or remove the yellowing. I stumbled across this article: Retr0Bright Gel What I can't seem to find is, whether this stuff works or not, is it safe to use on areas where there's paint? After all, I don't want to have brighter whites in exchange for a completely blank surface. Has anyone tried using this stuff before, or has a better suggestion for me to try using? Thanks!