Our home whitening kits allow you to whiten your teeth in the comfort of your own home over the course of just a few weeks. We'll custom make your whitening trays using a 3D scan of. your teeth. Each night for a number of weeks you'll add your teeth whitening gel to the trays for sleeping in. After just a couple of weeks your teeth could be up to 16 shades brighter! Ask about teeth whitening at your next routine visit to Kamran Rasul.