How to Make Yellowed Plastic on Appliances White Again

This is effective for stubborn yellowing and is commonly called the “Retrobright” method.

You’ll Need:

Hydrogen peroxide (3–12% solution)

Plastic wrap or a clear container

Gloves and safety glasses

Brush or sponge

Steps:

Clean the plastic thoroughly with soap and water.

Apply hydrogen peroxide evenly over the yellowed areas.

Cover with plastic wrap or place under a clear container to keep it moist.

Place in direct sunlight or under a UV lamp for 1–3 hours.

Check progress periodically. Once satisfied, rinse and dry.

2. Baking Soda & Water Paste

A gentler approach for mild yellowing.

Steps:

Mix baking soda with water to make a thick paste.

Apply the paste to the yellowed areas.

Let it sit for 30–60 minutes.

Scrub gently with a soft brush or cloth.

Rinse thoroughly and dry.

3. Bleach Solution