difference between 30 and 45 minute teeth whitening
The strength of gel you use dictates how long you will need to use it for. The 3% Poladay gel, for example, can be used two or three times a day for 30 minutes at a time, or just once for 60 minutes. Its 6% counterpart should only be worn for 45 minutes at any one time, or during one to two 30-minute sessions per day.ou can use the 10% Polanight for two hours to overnight and the 16% Polanight for between 90 minutes to overnight. To use, place a small drop of gel into each compartment of the teeth tray and then place the tray around the teeth. Wipe away any excess gel with a tissue or soft brush.