After the application of the intensive white Tooth Whitening Strips I can only advise to alternative products. The strips of Odol-med 3 have significant drawbacks: - They are too inflexible, which makes adaptation to the teeth difficult - The majority of the strip for the bottom teeth stuck so firmly to the individual packaging that they went broke, if I wanted to replace it carefully (!) - Lightening falls to me interesting, different, some points of my teeth are whiter than others. In my opinion is not acceptable, especially since I had used years ago good 4 the Blend A Med Whitestrips that I can recommend without restrictions! The only thing I would note is positive, that the strips of Odol-med 3 came with a nice scale, by which one can determine the individual tooth color before and after bleaching. However, a rather cold comfort when you think about the cons ...