NOW Xyliwhite Mouthwash is an effective fluoride-free oral rinse that works in unique ways to help you achieve a smile that's healthier and brighter than ever before! Xyliwhite Mouthwash gets its cleansing properties from xylitol - a naturally occurring sugar alcohol that has been shown in clinical studies to help promote dental health; effectively rinsing debris, such as food particles containing bacteria from mouth surfaces. Xylitol also helps safeguard healthy tooth enamel surfaces. By preventing the mouth's pH levels from falling below their normal range, Xyliwhite Mouthwash protects the enamel surface of teeth.