It was a pretty speedy process, however, I have naturally sensitive teeth so I probably would not do this again. Yeah, my teeth were much whiter afterwards but my goodness I was super sensitive for 2 whole weeks.
It's been over a year since I had them whitenened and I'm a coffee drinker so they're stained again. This time around, I will opt for my Crest White Strips. Longer process, lower price point but the biggest advantage to me is less sensitivity!