Whiter Teeth at Any Age! | How to Keep a Gleaming Smile

While xylitol doesn't directly whiten teeth, but it can help make them appear whiter by strengthening enamel and reducing plaque buildup and discoloration. At bedtime after brushing and flossing, dip your brush in xylitol crystals and gently brush them on your teeth. Don’t rinse your mouth and don’t eat and drink for at least 30 minutes. Xylitol is safe in small doses, but high doses can cause some health problems. A study found that higher levels of xylitol in the blood were associated with an