Crest Scope Outlast Mouthwash uses ground-breaking outlast technology that binds tightly to select receptors in the mouth, creating a cool, refreshing sensation that lasts longer. With Crest Scope Outlast, experience up to 5X longer fresh feeling breath* while the formula kills millions of bad breath bacteria found in your mouth. With a cool blast of Scope for a refreshed, clean feeling. *vs. brushing alone