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.

Overall ease of use of the toothbrush including evaluation of the weight, handle comfort, ease of removing the brush-heads, etc. The Colgate 360 Advanced Whitening Soft is part of the Toothbrushes ...

Whether you're after a simple DIY remedy or a more advanced whitening treatment ... Try this: Colgate Optic White Toothpaste The whitening formula uses active oxygen bubbles to lighten the ...