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

Really good everyday toothpaste. Leaves my teeth feeling clean and smooth and helps keep stains under control with regular use. I noticed whitening effect if you use it for a week. Doesn’t feel harsh and works well for daily brushing. Happy with the it

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.

Does what it says teeth whitening. Not bad

Been using this a while now, and not noticed a difference in appearance with my teeth at all. The brush clogs up, you can't see where you've brushed it on, if not careful when using on your teeth you get it on your lips and it stings and takes a while to pull off almost like you've glued your lips (you don't need lip fillers put it that way) Not effective at all. Pretty bland when it comes to taste as there isn't much. Top put in a nutshell it don't work so don't bother with it. My teeth aint the best but they ain't bad either and not noticed a change of colour at all

Tasted ok, easy to use but ultimately not effective at all

Fabulous ……..worked on first use, but cheaper elsewhere. Would highly recommend the product

Takes a lot of separate applications to make a little difference. I did a comparison by doing just my top set of teeth only so could do a direct comparison with the bottom, untreated set of teeth - to see if it actually works. Yes, but very subtle, but then again, the advert pic - before and after - is not a dramatic difference anyway.: and that is the level of shade difference I saw on my teeth. Application wise - the gel is clear, so cannot see if missing bits when applying it - and also, will be difficult to see when it has actually run out, as cannot see if there is any on the brush - I am still using mine after a couple of weeks and it could be that there is nothing left and i am just using the brush against my teeth with nothing on it! So will just have to decide on a day to stop, Would be better if the gel was coloured, as you are using it overnight in bed, so would not really be an issue with a coloured gel.

It is not working