Zoom at-home whitening options will include custom trays to fit over your teeth. For Zoom DayWhite, you wear the trays during the day for a half an hour to an hour and a half once or twice a day.

Zoom Whitening Diet: don't eat/drink anything (besides water) because you're scared everything will stain your teeth — Kirbie Johnson (@kirbiejohnson) July 1, 2014 Don't worry, I ate.

Shrena tends to be self-conscious about the shade of her teeth, so she's getting a whitening treatment that will brighten her smile by 8-10 shades.

Zoom teeth whitening is one of the fastest ways to whiten teeth. It claims to brighten your smile up to eight shades in under an hour.

Some whitening vets told me the process was painful because they had sensitive teeth. Others said they had no problem at all. I wasn't sure what to do.

ZOOM!, an in-office whitening treatment. The dentists apply a safe whitening gel to your teeth and then use a low-intensity light, to activate the gel.