Colgate Rejuvenating Toothbrush If they make mouthwash or if there's a new product in their lineup, it could contain components meant to treat gum-related problems. These mouthwashes frequently have antibacterial ingredients to combat the bad bacteria that cause gum disease and plaque accumulation. When used, the mouthwash may have components that assist stimulate and calm the gums, giving the user a pleasant feeling. It could also aim to lessen gum irritation and enhance general gum health; it might even contain fluoride to prevent cavities.