poladay and polanight allow clinicians to tailor their tooth whitening to the preferences, lifestyles and sensitivity concerns of their patients. poladay comes in 3% and 6% hydrogen peroxide formulations, and can be applied for as few as 30 minutes a day. polanight, with its 3% and 6% carbamide peroxide formulations, is designed to work overnight and is often the gentlest approach for sufferers of sensitivity.