Exactly how long to leave Opalescence 35 on teeth safely
Knowing exactly how long to leave Opalescence 35 on teeth is the difference between getting a Hollywood smile and dealing with a week of painful tooth sensitivity. If you've just picked up a kit of Opalescence PF 35%, you've probably noticed it's one of the strongest concentrations available for at-home use. Because it's so potent, you can't just "set it and forget it" like you might with a lower-strength whitening strip. ...