IT REALLY WHITENS!
These white strips really whiten the teeth, BUT I noticed my teeth are sensitive to cold drinks and cold foods after using the whitening strips. Overall, I think this is a great alternative to spending hundreds at the doctor's office! :)
One of the compliments I receive is how white my teeth are. My secret is the Crest 3D White Strips Professional Effects. I've tried other teeth whiteners before and they just did not work as well. Some of them made my teeth extremely sensitive to hot and cold. Others just didn't fit the shape of my teeth well. This is the easiest to use and is worth the money.