4.
If possible, expose the device to sunlight. Sunlight enhances the effects of hydrogen peroxide and whitens teeth faster. Leave the device in the sun for about an hour.
Remove the foil and clean.
After an hour, remove the foil and wipe off excess peroxide with a damp cloth. Repeat the process as needed until you achieve the desired result.
Additional Tips
: Reapplication: If yellowing is severe, the process may need to be repeated several times.
First, test the hydrogen peroxide on a small area to ensure it won’t cause an adverse reaction before applying it to the entire surface.
Extra Protection: To prevent yellowing, keep devices out of direct sunlight and use covers. DIY Solutions:
If you can’t find 40% hydrogen peroxide, you can brighten yellowed plastic on devices with household remedies.
