When compared to other whitening toothpastes, the value you get from Opalescence Whitening toothpaste is, dare we say, a steal.
As part of an NYU study*, a group of healthy adults brushed their upper teeth with Opalescence Whitening Toothpaste. They also brushed their lower teeth with a non-whitening fluoride toothpaste. After one month of brushing their teeth as directed the results spoke for themselves. A comparison showed that their upper teeth brushed with Opalescence Whitening Toothpaste had improved an average of two shades or more!
*Gultz J, Kaim J, Scherer W. Whitening efficacy of a whitening toothpaste crème [IADR abstract 2747]. J Dent Res. 1998;77(suppl 2):975.