I gave my kids a surprise early Christmas gift of a teeth whitening from Sensational Smiles. I arranged the day in Oct with Rob. Loved the idea of him coming to my daughters house, so it would be a complete surprise. It was a great experience. My daughter and I gained about 3 shades of whiteness. My son, who had never had a teeth whitening was the big winner, gaining 18 shades of whiteness! What a great service. We each did an hours whitening and experienced very little in tooth sensitivity following treatments.