Everyone has different teeth so naturally results will vary. Commonly if you use Mr Bright correctly you can expect to see your teeth get between 5 – 8 shades whiter and if you keep good care of your teeth you will keep your results for up to 4-5 months.Remember not to consume any foods or liquid that contain dyes (or smoking) within an hour of whitening your teeth. For the best results we recommend using Mr Bright just before bed.