Zoom teeth whitening was NOT worth it: Zoom teeth whitening review

I had my teeth done with Zoom for 750.00 I was quoted 500.00 but when I went to pay they had increased the price. It took about 4 hours including prep time and zoom time. The bleach was put on three times for 15 min each time. My teeth were about 1 shade lighter, but after about a week they went back to the same color as before. I do not drink tea, coffee or smoke. I was really disappointed with this as I thought they should be about three shades lighter. My teeth are not super yellow to begin with but I feel I get better results with White Strips. I would not pay to have this done again by this dentist !