I had De-Yellowing my Famicom with Hydrogen Peroxide one year ago .
But I find it changed to yellow again ,and the yellow seems worse now than before.
Does anyone have the same situation as mine?
PS.I only pure Hydrogen Peroxide in container without "Oxy" type laundry booster .
You didn't locked surface with UV blocker.
/thread
Yeah you either have to use a temporary uv protectant or pick up a matte clear spray for a permanent solution