What comes: individually wrapped strips with tooth scale (white scale), manual and packaging, all in English, in an envelope. A statement issued on Amazon is available, but no dealer address is specified. The strips stick extremely on the teeth if you want to remove the application again, also they give off a disagreeable-chemical taste. Initially, a slight burning sensation is felt. After application and removal of the strip still adhered much gel on the teeth, so that they should be cleaned afterwards, if you want to be sure that everything is removed. The rear swallowing of saliva during use should be harmless, but I would not recommend that. The manual advises the strip to allow 30 minutes your teeth appear on the packaging 1-2 hours. However, it would be difficult to leave the Strip for more than 30 minutes on the teeth, as the chemical taste and salivation are quite hard to bear. The result is mixed. After removing one sees first white spots on the teeth. The white spots disappear after 1-2 hours, unfortunately, the first teeth whitening is even after 12-24 hours mostly gone. After 2 weeks of use, a low to moderate lightening is visible. Unfortunately, there is the Crest / Blendamed Whitestripes no more, they were more expensive but better results and more enjoyable to use. Another problem: we know neither the sender (the letter is probably somewhere in Ireland), nor the exact manufacturer. While it is the word of the Chinese manufacturer's "Onuge" printed side, but no manufacturer address, no barcode or anything else, as it is known by the products that you acquire here in Germany. A CE mark is present, whether it is genuine, is sometimes debatable. Anyone who attaches importance to a unique origin, should think about buying.