Restore The White In Yellowed Plastics
If you have electronic gadgets with plastic casings that have yellowed over time, hydrogen peroxide can restore them to their former glory. The process requires turning to hydrogen peroxide in a developer form, the kind that’s used to dye your tresses or hydrogen peroxide in 10% to 15% concentrations.
Most people who have attempted the task sprayed the diluted peroxide on the plastic in question or used a brush to rub it onto the item. It does require a given level of tech know-how, particularly if you are handling console or old computer casings. The website How to Geek has a comprehensive guide on how to go about it.