Also, the process is somewhat reversible: Retrobright
However:
The long-term effectiveness of these techniques is unclear. Some have discovered the yellowing reappears, and there are concerns that the process weakens and only bleaches the already damaged plastic.
Yeah retrobright is… Basically only a reasonable option if you want things to look good for gathering footage, it’ll go back to looking like shit within a year or two.
Did scientists figure out how to keep the beige box from turning into a yellow box?
Don’t expose it to UV or excessive heat.
Also, the process is somewhat reversible: Retrobright
However:
Yeah retrobright is… Basically only a reasonable option if you want things to look good for gathering footage, it’ll go back to looking like shit within a year or two.