It does make your teeth blue grey in the final image!!! – Teeth Whitener - Photo Editor Review

It does make your teeth blue or greyish - and I am talking about the final image not the blue 'toothpaste' that you apply to 'whiten' your teeth. If you only whiten a couple of levels it is not too bad but if you try to maximize the whitening you will get blue or grey teeth. You also have to be careful when applying the 'toothpaste' to not get any on your lips do or your mouth will look odd and the whitening application/edit will be very apparent.
Review by Jojo4n on Teeth Whitener - Photo Editor.