On this episode of Take My Money, PureWow creator Kate Kesselman finally got her hands on the viral Colgate Optic White Overnight Teeth Whitening Pen ($25; $19) and decided to put it to the test.
Colgate's Optic White Express Teeth Whitening Pen won a Best of Beauty Award for its quick-acting formula, and the Optic White Overnight Teeth Whitening Pen is perfect for before-bed use.