How white will my teeth get? June 07, 2023 13:25 Updated Using this product as directed for 10 minutes a day for 10 days gives six shades whiter teeth. Individual results may vary. Related articles How should the device fit? Do I have to do it every day? How often do I use the teeth whitening system? Is the device safe for use? Will it damage my teeth? Will the light get hot during use? Comments 0 comments Article is closed for comments.