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

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

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.

Does seem to whiten teeth. It's a bit awkward getting the knack of how to apply this properly. It involves drying you teeth, applying then leaving it to dry for a bit. And you have to brush your teeth as soon as you wake up because it dries hard and gritty on your teeth. It's worth a go though. Only been doing it for a few weeks, so no drastic change yet. Buy teeth do look a bit whiter.

Idk why but it worsen the situation and my teeth became more yellow.

For someone who has tryed so many thing's to get their teeth back to the normal colour (without smoking, lot of coffee at point's) over the years my poor old teeth took alot and was quite embarrassed as alot of people would be, eventually after so many things brought I got this peace of kit AND Wow what this product has done to my teeth in I think we worked it out to be the 6th day and 50%of my front top and bottom were getting back to there colour again, as we all know we can never achieve our true colour back, but this has impressed me so much and who ever say's it doesn't work are obviously not doing something right, it's so simple!! YOU'D BE GLAD YOU TRYED IT😁, do not get near gum's as it will burn, top product would recommend great value for it's money💵👌😁😊

The seller was great and quickly sent a replacement when my first pen never arrived, so I really appreciate their service. Unfortunately, the product itself was a big letdown. The pen goes on like some kind of dental glue and leaves a sticky layer on your teeth. I tried it a few times, but honestly, I couldn’t deal with the sensation - it felt gross and made it impossible to relax. I gave up before seeing any results, so I genuinely have no idea if it whitens or not. Let’s just say… you definitely need to be single or sleeping alone to use this without embarrassment 😅 (which I am - and still couldn’t tolerate it).

Delivered, thank you

Easy to apply and remove seen small improvement after 1 month of use but not too profound.

It is not working