Introducing new Crest Breath Purify & Gum Deep Clean toothpaste. Created after years of research by Crest scientists, it’s been specially formulated to target the millions of plaque bacteria around the gum line.Crest Breath Purify & Gum Deep Clean uses a activated foam to help penetrate hard to reach areas, finding and neutralizing harmful plaque bacteria around the gum line for clinically proven healthier gums. Because if you're not taking care of your gums, you're not really taking care of your mouth.†Helps reverse gingivitis*in lab testing