I got this off of groupon for $ 80 and Inwas not disappointed! I would highly recommend it to anyone over the teeth whitening strips and to anybody looking for a whiter smile. The session was 1.5 hrs long and Shelley walks you through the entire thing. It’s basically 3 separate sessions with 5 sub sessions — nothing too complicated. After you finish one session, the other two repeat and Shelley repeats the instructions in case you forget a step. Overall, I could tell my teeth were a lot whiter than compared to before I began. I would say my teeth got a shade or two whiter. Shelley did say that this process is suppose to last six months and six months includes coffee drinkers, smokers and/or both. She did say that it’s suppose to last longer if you don’t drink coffee and/or smoke. If you want a whiter smile then go see Shelley. You will not be disappointed! :)