As in: making 16yr old old plastic trim look new again.
2002, Sightseer ...with many 'Yellow'ish' interior bits with the exception of the ceiling. YouTube is really helpful, so I followed the advice presented by a guy who refreshes old computers.
Hydrogen peroxide - which bleaches hair, is wound care and people (who?) even gargle with it. What's cool about the internet is that you find both the highest concentration, 40%, and the least likely to evaporate (a cream) comes from Sally Beauty Supply. $12. gal.
I bought a 20watt UV lamp on Amazon and started yesterday afternoon at this time. I have an old site trailer that I use to fix and paint surfboards. Set the pieces on a sheet of plastic let the light shine. He did 36 hours - me too for the first time.