Crest Pro-Health Advanced with Extra Deep Clean mouthwash helps you have stronger teeth* for a healthier mouth. It kills bad breath germs, helps prevent cavities, strengthens enamel, cleans teeth and gums, and freshens breath. *when added to a good oral care routine by strengthening enamel. Works with Crest Toothbrush, Crest Whitestrips, Oral-B Floss, and Oral-B Electric Toothbrushes. Age Group: Adult.