whitening

American  

[hwahyt-n-ing, wahyt-] / ˈʰwaɪt n ɪŋ, ˈwaɪt- /

noun

1. a preparation for making something white; whiting.

2. the act or process of making or turning white.

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Etymology

Origin of whitening

First recorded in 1595–1605; whiten + -ing ¹

Example Sentences

At the import expo, it showcased a new whitening toothpaste for the Chinese market, developed at Crest’s Beijing research institute.

From The Wall Street Journal

With shelves full of whitening, charcoal, and enamel-boosting pastes, it's easy to assume the pricier options will give you a healthier smile.

From BBC

Kellie Howson, 54, who lost four teeth after she paid £65 for a whitening treatment at a beauty salon in Lancaster, urged the public to be aware of the dangers.

From BBC

In food, calcium phosphate is used as a whitening agent.

From Los Angeles Times

If you're undertaking a home whitening process, sparkling water might discolor your teeth.

From Salon