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The brand suggests using it after eating something that is particularly staining to the teeth, like coffee.

Photo of a smiling woman next to picture of crest whitening emulsions with wand applicator on an ombre purple background

Allure/ Ingrid Frahm

That much was apparent when I tried this.

“It whitens teeth by oxidizing the organic matrix.”

My first utility was at night, before brushing my teeth.

sidebyside of a beauty woman baring her teeth before and after using a tooth whitening product

Courtesy Jihan Forbes

I squeezed out quite a bit of the emulsion onto the wand and slathered it all over my teeth.

Leave-on for how long?

What about my saliva getting all over it?

side by side of a light blue tube of crest whitening emulsions with the applicator wand

I was determined to see more of a difference the next day.

I drank a giant cup of coffee the next morning and was ready to see some real results.

I went back to my bathroom, applied a medium-thick layer of the emulsion, and waited three minutes.

This time, I didn’t wash out my mouth.

Think you may be super sensitive to the chemical?

I’d say keep it in your bathroom cabinet as another step of your oral hygiene routine.

Pick it up for $50at Target,Walgreens, andCVS.