Colgate Optic White Overnight Whitening Pen - 2.5 mL

I use it in complement to in office professional whitening, to maintain my teeth whitening and it works really well on me. It removes the deep stains of coffee, and helps me maintain my white teeth longer.

It just doesnt work. The steps are annoying and once the product is applied on your dry teeth your brain onows its there and so you just start to salivate like crazy.I could not actually sleep a single night. After trying for three nights I gave up.Their strips are a bit better to use.But this pen is basically worthless.The toothpaste that you are supposed to use with this does seem to be working though.

This definitely does not work and a real waste of money. The liquid hardens whilst you’re applying it on the brush. Teeth strips do a better job than this. I literally saw no difference at all!

Met my expectations, i didnt notice any changes at first with the whiteness of my teeth, but after a few days of using it i noticed that my teeth had really brightened up

Cheaply made product. After just 2 uses the push mechanism button which “clicks” stopped working (got stuck instead and wouldn’t come out again)