At-home whitening is as easy as 1-2-3! Your first appointment is a fast, digital, goop-free impression taken of your teeth. Second, we try in your trays, give you instructions, and answer any questions you have. And third, you wear your trays at night and enjoy your fantastic results! Each appointment in the office is only about 20 minutes. If you choose to boost your whitening with our Kor Max, there is one more in-office treatment which take about 90 minutes.