I brought this product due to being curious of the results, I really would love white teeth and spend alot of money on oral hygine. The price of the product is very good. The instuctions seemed very easy to understand and step by step instructions laid out in an easy to understand way. The shield felt a bit strange in mouth for the first couple of times I used, the gel didnt take that bad and you could carry on doing other tasks while the gel was working. The results were I must say were better than expected, I could tell my teeth were getting brighter by the dayby the end of the first week you could defently tell the difference. So I would recommend it for a short fix. The thing I did find was that it made my teeth very sensitive for a few days after. Happy smiling to you!