How to whiten faded plastics

[RichS]

Hi all. I have for year been trying to find an effective way to whiten faded plastics. It is so annoying replacing broken white plastics as they stay out like a sore thumb against the old ones meaning you replace the lot!
I have tried hours in the Ultrasonic Tank, bleach, Hydrogen Peroxide & a UV light ,(works sometimes), Scrubbing with scouring powder. I have even tried tooth whitening, It apparently works on teeth, why not plastics? but no! Ideas anyone.

 

[kev a]

The console collectors use some special product submersing the plastic and leaving it out in the sun, but I think its hydrogen peroxide based anyway. No idea if there's anything else in it that makes it work better.

 

[Davey D]

The console collectors use some special product submersing the plastic and leaving it out in the sun, but I think its hydrogen peroxide based anyway. No idea if there's anything else in it that makes it work better.

Yeah it's usually just hydrogen peroxide

 

[M4carp]

I have got rid of the yellowing on clear plastics with hydrogen peroxide, had some of the old stronger stuff though. Put it in a sandwich bag and left it out in the sun, virtually clear after. Took 2 or 3 days.

 

[Mozie]

I tried this too a couple of years back with meh results using diff versions of the reteobrite mix. Some looked great initially but after a year or so went back to how they were, another console (famicom) it made the plastic very brittle and c64 still looks decent. Worth a try if you can get a couple of decent days