Crest Pro-Health Clinical Gum Protection Toothpaste ? Invigorating Clean Mint helps reverse gingivitis in 4 weeks and provides an invigorating sensation. Product Information One out of two adults has gingivitis, and may not even know it. Help reverse gingivitis in 4 weeks with Crest Pro-Health Clinical Gum Protection Toothpaste - Invigorating Clean Mint. It provides an invigorating sensation while it improves your gum health. Its clinically proven active ingredient protects against gingivitis, sensitivity, cavities, plaque, and bad breath.