brightener

American  

[brahyt-n-er] / ˈbraɪt n ər /

noun

1. a person or thing that brightens.

2. a chemical or other agent used to increase brightness, as one added to toothpaste or detergent to intensify the cleansing or bleaching process.

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Etymology

Origin of brightener

First recorded in 1790–1800; brighten + -er ¹

Example Sentences

Deck cleaners can darken the wood, so some contractors use a wood brightener to restore the natural appearance before staining.

From Seattle Times

His good cheer was a real day brightener.

From Seattle Times

In 2016, for instance, one participant died and five were hospitalised in a Phase I trial run by French company Biotrial in the city of Rennes, testing an experimental mood brightener made by Portuguese drugmaker Bial.

From Reuters

For rust stains, ground-in dirt and grime, and pigment staining, Trex recommends applying a deck brightener, a type of product that contains oxalic acid, and waiting 10 to 15 minutes before rinsing.

From Washington Post

So when you clean that with soap and water or use a deck brightener and still see stains, Trex says you can turn to a pressure washer — provided it is set no higher than 3,100 pounds per square inch, you use a fan tip, and you keep at least eight inches above the decking.

From Washington Post