When I arrived the machine would not work but the staff were very apologetic and these things happen so I didn't mind, I had my teeth whitening treatment and was disappointed but they did look slightly whiter (it was dark in the room) , I had checked my teeth using a teeth colour chart that day so I checked again when I went home. They had only gone one shade lighter. For that amount of money I would expect better results. I have since purchased a good whitening toothpaste that has done a better job. The staff and salon was nice but I would not recommended teeth whitening.