I am unusual as I like going to the dentist for teeth cleaning. I really like the very smooth feeling after a professional cleaning. The sample was included in a purchase of regular Crest 3D toothpaste. I was very skeptical at first but after just one use, I was truly amazed how my teeth felt. I can not tell that my teeth are whiter, but after using the cleaner, the polish feeling is great. I would recommend to use only as the directions suggest, I only use about every 3 to 4 weeks.