The concentration of professional whitening agents, typically 2540% hydrogen peroxide, is dramatically higher than anything available over the counter, which is why professional treatment produces results that consumer products simply cannot match
(I once traveled from Bismarck, N.D., to Buffalo, Wyo
Thorpe left pro sports in 1929, at the age of 41
MATERIALS AND TECHNIQUES Silver Plate, Sandalwood, Lead
Bak, Universit de Lorraine Mark Bernard, Carson-Newman College Larry Blades, Independent scholar Darrell Bourque, University of Louisiana, Lafayette Will Brantley, Middle Tennessee State University Robert Bray, Middle Tennessee State University Mary F