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

After just 3 nights using it, i can see a very subtle difference so I am already very happy. I used to smoke for 20 years then switched to vaping, so my teeth were unfortunately a bit yellow. I'm glad i bought this so I can have the confidence to smile more. If I can see a difference after 3 days then I look forward to how it looks after 30. You have to make sure you dry your teeth after brushing, then apply the serum, then make sure it dries. Don't put too much on because it'll get onto your gums and can irritate them.

Doesn’t do what it says but pleasant taste

Does whiten teeth with regular consistent usage but after you stop using it the teeth do darken a little pretty much straight away but not as dark as start. Went to an a2 colour but couldn’t really get it lighter with this.

I swear by this! No taste to it, I use it with the LED light and you can really see a difference in colour after use, dries down quickly works so well

Tried this product on the basis of the reputation of the brand and other positive online reviews. I wanted to try an alternative to whitening strips, as the brand I have recently bought is quite pricey. Compared with the other brand, this serum and ease of application has been really disappointing. The serum, if coming into contact with my lip is quite uncomfortable. It is also difficult to know if coverage is sufficient when applying, and it can dry in sticky lumps on the teeth, which needs a good toothbrush the following morning to remove. My teeth also feel quite sensitive after application. Overall I am not convinced that the serum is having any whitening of the teeth, it is subtle at best. Won’t be buying again.

I’ve used this product every single night for four weeks, following the instructions to the letter. Although it does seem to have removed a couple of stains, my teeth are certainly no whiter than they were before I started using it. It is easy to apply, although if you put too much on it does dry in a clump which can be a bit of a pain to remove. I’m sure it works for a lot of people but, unfortunately, it hasn’t worked for me so I won’t be buying it again.

Spot on

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💵👌😁😊

It is not working