The Secret to My Bright, White Smile? These Teeth Whitening Pens

Dedicate the next 21 days to achieving your whitest smile ever. With help from Colgate’s pen, you’ll see sparkling results in less than a month. It comes with a stand so you can easily store it on your countertop and remember to use it.

Key ingredient: Sodium Monofluorophosphate

Amazon rating: 3.8/5 stars

An Amazon reviewer says: “This whitening pen is simple to use and great for removing stains. You just brush it on your teeth before bed, and it works overnight. There’s no messy trays or strips, which makes it super easy. The gel dries fast and stays in place, so you don’t have to worry about it rubbing off.After using it for a while, teeth start looking brighter. It’s not an instant change, but with regular use, the stains fade. It’s gentle, so it doesn’t make teeth super sensitive like some other whiteners. If you want an easy way to get a whiter smile without much effort, this is a good pick.”