How Teeth Whitening Works
In contrast, Carbamide Peroxide releases its whitening power within five hours and reaches its maximum strength in two hours.
Effective results in whitening are driven by length of wear time and concentration of active ingredients in the formula. But the higher the concentration of the active ingredient, the higher the likelihood of sensitivity. That’s why highly sensitive patients should start with a low-HP whitening option, which will have a shorter wear time, or a low-CP concentration.