The Rio Smile White Advanced Teeth Whitening Kit uses the very latest advanced whitening gel and blue light activation technology to gently lift and clear stains caused by coffee, tea, smoking, wine, food colouring or ageing. Studies have shown that people with whiter teeth are perceived as being younger, healthier and more successful. Now you can whiten your teeth in just 15 minutes with this latest easy to use technology in the comfort of your own home and without the expense and inconvenience of visiting a dentist. No batteries required, simply plug into a USB output or any smart phone – now that’s something to smile about! The Set Contains: Smile White Advanced Blue-Light Teeth Whitening Advanced Whitening Pre-Treatment Spray (4.5ml) Advanced Whitening Gel (30ml)