A device for tooth whitening, comprising a dispenser (11, 311) is equipped with an area for holding (13) of the user and a nozzle (14, 314) for ejecting a flow of whitening product that it comprises a tank (16, 316) of at least part of whitening that said dispenser (11, 311) such that moves together with said dispenser during the movements of the users hand is set, and a source (219, 319) of pressure energy, the type (219, 319) which can be used until it ends, designed to allow the output of the whitening product said device comprising both a tank (16) for at least part of whitening product in solid or semi-solid state, like a tank (17) of a product in liquid state and a means designed for mixing said product in powder and state liquid before leaving said nozzle (14) said device comprising a conduit (18) leading to said nozzle (14) and operatively connected to said source (219) of pressurized energy from which, during operation, a gas flow extends being connected operatively in an intermediate position of a first extension (18A) of said duct (18), said tank (16) of at least part of bleaching, causing, therefore, the passage of the gas flow through said intermediate position of said first extension (18A) of conduit (18), the suction and the outlet in the duct of said at least part of whitening by Venturi effect being connected operatively in an intermediate position of a second extension (18B) of said conduit (18), said tank (17) of product in the liquid state, causing, therefore, the passage of the gas flow through said intermediate position of said second extension (18B) of conduit (18), the suction and the outlet in the conduit (18) of said product liquid by Venturi effect mixing said at least part of the whitening product and said product in liquid state before leaving the nozzle (14).Un dispositivo para blanqueamiento de dientes, que comprende un dispensador (11, 311) que se equipa con una zona para sujeción (13) de parte del usuario y una boquilla (14, 314) par
