Day White® Excel 3 The highly effective hydrogen peroxide formulas of Day White Excel 3 can transform smiles to their whitest in only a few days. In two concentrations: 7.5% and 9.5% Each Day White Excel 3 syringe contains 2.6 grams (2.4cc) of gel. Recommended usage: three dual arch applications per syringe. Day White Excel-3 9.5% Day White Excel-3 7.5% DentaMart.com © 2002 - 2013 | privacy | order info | shopping cart | contact Prices subject to change without notice. Product packaging is subject to change without notice and images of the product or product packaging online may differ from the actual product shipped.