Xylitol prevents cavity causing bacteria from creating tooth-eating acid. It also reduces the plaque they create and even aids in re-mineralization, your bodyÍs natural way to strengthen and heal your teeth. It is a sugar free product. Our 100% Xylitol breath mints are sugar free and great tasting. They may reduce your risk of tooth decay and are gluten free and safe for kids. These sugar free breath mints are a great substitute for sugary mints.