Instruct: Classify the given review into positive or negative sentiment.
Query: Very good product

I really noticed a difference in the apperance of my teeth after using this. I have used the strips and found them to be awkward not to mention painful as they made my gums sore. I had an easier time applying the gel on my teeth and because it dries so fast, none of it got on the gumline. I would definately use it again.