Getting the white back from freezer water/ice cube dispenser area AND refrigerator door handles.

I am looking for a solution to get the yellowing (and brown from where the light switch is) white again. Any solutions

RF260BEAESR by Samsung - 26 cu. ft. French Door Refrigerator with Filtered Ice Maker in Stainless Steel

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LG LRFLC2706S 36 Inch Smart Freestanding Counter-Depth MAX™ French Door Refrigerator with 26.5 cu. ft. Total Capacity, Internal Water Dispenser, Ice Maker, Door Cooling Plus, Wi-Fi Enabled, ThinQ Technology, Sabbath Mode and

LRMXS2806S by LG - 28 cu ft. Smart Double Freezer Refrigerator with Craft Ice™

Igloo Automatic Ice Maker, Self- Cleaning, Countertop Size, 26 Pounds in 24 Hours, Cubes 7 Minutes, LED Control Panel, Scoop Included, Perfect for Water Bottles, Mixed Drinks, Stainless Steel : Appliances

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