Rio Professional Teeth Whitening Machine - £58.20 At Amazon

What Causes Yellow Teeth?

Although found in different shades, when teeth begin to form they all grow with an external white enamel. The foods and drinks we eat, such as tea, coffee, red wine and strong colouring in foods, gradually stain this white surface. Abrasive toothpastes and hard toothbrushes (along with age) also accelerate the erosion of the tooth surface--the white enamel--exposing the yellow dentin core which lies beneath. Teeth often therefore appear yellowed and dull in colour.

The Treatment

Simply syringe a line of whitening gel into the mouth tray and place it in your mouth resting it against your teeth. Turn the unit on and the blue light will run before automatically turning off. Once you have completed the treatment remove the unit from your mouth. For maximum results you can repeat the treatment up to three times in one session.