I have already tried a lot of strips. The wonderful blend-a-med Whitestrips from the pharmacy there are no longer any reason whatsoever. My guess is that the dentists had a problem with it, because the people could now itself perfectly bleachen their teeth without having to take expensive treatments at the doctor to complete. A source of money for less money vultures by dentists. So this brilliant Whitestrips were quickly withdrawn from circulation and replaced by cheaper and less useful. Unfortunately this also include this here. Although they act, but the teeth are not as white as once with the Blend-a-Med. In addition, the effect vanishes in a flash. After 2-3 weeks you can safely adjust to the fact that the teeth take their original color again. I find all of these strips are in the bin and not in the sale, as long as they do not achieve the effect of the Blend-a-Med. I'd rather spend my money on something more meaningful and let my teeth once in peace as long as nothing is better on the market. I only forgive a single star for this product. For more, it is simply not enough.
