How to Make Yellowed Plastic on Devices White Again: A Detailed Guide

Over time, many plastic surfaces on electronics, appliances, and gadgets turn yellow. This happens because of UV exposure, oxidation, and the breakdown of flame-retardant chemicals in the plastic. The good news? With the right method, you can restore much of that original clean white look.

What You’ll Need

Protective gloves and eye protection

Soft cloths or sponges

Mild dish soap and warm water

Baking soda (optional for gentle cleaning)

Hydrogen peroxide (3% liquid or cream version used for hair bleaching)

Plastic wrap (cling film)

UV light or direct sunlight

Old toothbrush or soft brush

Step-by-Step Guide
1. Initial Cleaning

Mix warm water with a few drops of mild dish soap.

Wipe down the plastic to remove dirt, oils, and surface grime.

Dry thoroughly before moving on.

2. Surface Stain Removal (Optional)

For light yellowing, make a paste of baking soda and water.

Rub gently with a soft cloth or sponge, then rinse and dry.

This may be enough for mild cases.

3. Deep Whitening with Hydrogen Peroxide