Top positive review
Effective but not perfect
Reviewed in the United States on December 27, 2017
Does an excellent job whitening. Gave 4 stars because I feel that the strips are too short. I wish they extended a bit further towards the molars. The strips also cause minor discomfort on the gums and tastes pretty bad but not so bad to keep from using them. I attached a photo of 'before' and after only 5 treatments. There are 14 treatments in the box.