Opalescence Instructions - Version 1.0 This program will cover Opalescence instructions for the proper and safe use of Opalescence 35, 20, 15, and 10% PF carbamide peroxide concentrations. It is intended for anyone who is interested in the Opalescence bleaching procedure and for any customers who have received an Opalescence kit intended for dentists, without the full instructions. It also includes additional tips that are not part of the official instructions but highly recommended. Opalescence is one of the most popular teeth whitening kits and is designed for maximum whitening with minimum tooth and gum sensitivity.