Colgate Max White Overnight Teeth Whitening Serum - Home Teeth Whitening Pen - Reverses 15 Years of Stains* While You Sleep - New and Improved Applicator - Enamel-Safe - Easy to Use

Pleased with this purchase, it’s good quality, it’s a very thick Texture, it’s effective, withe a whitening effect, and the taste is quite strong.

This product is not as a dream solution as most might think it is. The application is pretty annoying but it'll do. One of my complaints is that during the process, I would wake up with extremely white spots on my teeth, however this was not my teeth getting white but just the cristalized cerum on my teeth, which I could only remove by picking at it with my nails. If I'm being honest, Im not sure it's worth your money.

Subtle improvement after 6 uses. You need to make sure teeth are dry before applying. Leaves a strange dry residue on teeth and lips (if they come into contact). I will keep trying.

Works surprisingly well Great for the odd darker tooth but is also amazing for overall use A but hard to brush off but easily pick off with nails + I have sensitive gums and this did NOT harm them at all

I don’t know how this is still on the market nor why more reviewers didn’t mention this but it leaves gunk or stains or something on your teeth that take days to brush off. On top of that, it doesn’t work.

The idea is good, but the execution is not good enough. On the tope teeth it will flows down and dries that way and sometimes it whitens the edge of your teeth. On the bottom it also flows down and it gathers at the root of your teeth making hard bits that are weird in the mount. Probably it can be applied a better way maybe putting less on the teeth but then its so tiny amount that its impossible to have any effect. Too much effort for unwanted side effects and nearly no results.

Excellent service

not really worked

It is not working