Many individuals desire a "bright" smile and white teeth, and consider dull and stained teeth cosmetically unattractive. Unfortunately, without preventive or remedial measures, stained teeth are almost inevitable due to the absorbent nature of dental material. Everyday activities such as smoking or other oral use of tobacco products, and eating, chewing, or drinking certain foods and beverages (in particular coffee, tea, and red wine) cause undesirable staining of surfaces of teeth. Dental gel compositions containing active oxygen liberating ingredients have been disclosed in the prior art for whitening teeth. Such gel compositions although effective for whitening teeth require multiple applications of the gel over a period of one to two weeks to provide the desired whitening effect. There is a continuing need for a rapid tooth whitening system, which can be safely applied by the wearer with or by a specially trained dental personnel. The poster compares different available options regarding instant tooth whitening. Schlagwörter: white teeth, whitening gel, tooth whitening system