With in-office teeth whitening, we can lighten your teeth by approximately 4 shades in 1 hour. When starting the procedure, a protective barrier is applied to the gums. Afterwards, whitening gel is applied to the teeth and the gel is activated with the application of light. It is applied in 3 periods of 15 minutes - 15 minutes - 10 minutes. To achieve maximum efficiency after whitening, it is necessary to stay away from tea, coffee, cigarettes, cola, red wine, acidic drinks and colored foods for approximately 2 days.