The top image shows my teeth before the treatment, with the second picture showing them after.
Unfortunately with a front-facing camera the quality isn't great - or very flattering - but I will try my best to keep all of the images consistent to try and demonstrate the results as best I can. I am going to continue using the Crest Whitening Strips and will post a new picture in a few days' time to show how the whitening has (hopefully) progressed.
I have not suffered any sensitivity so far, but will also post should this or anything else significantly change. I have now started using sensitive toothpaste as a precaution so hopefully this will help.