Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Eh....

If your expecting barbie white teeth with this product forget it. I'd say this product is for someone with already semi-white teeth who wants them to be even whiter. If your starting with less than white teeth like most of us are i'd recommend something much stronger. As for the application process, they where very easy to apply and i could carry on with my day as normal with them on. You'll experience a little sensitivity but nothing worth even mentioning. Overall, i'm not very impressed but they do have a return policy which is nice.