Our workshop on how to become photogenic teaches how you can have a great smile on camera, and here goes some tips on how to whiten your teeth. Be careful with some "magical" unknown products you buy online. Some can truly destroy your teeth. If you are sensitive to in the office dental treatments like Zoom, check if you can use Crest's whitening strips. I am sensitive, years ago I tried them and loved the results. I would start with the 5 minute strips. Then if you can tolerate them well, next time you can try other options: 30min, 1h or 2h. Now they even have them for "sensitive teeth". Most of my clients have been using them before their sessions.