Optic Brightener Formula: Contains a clinically proven unique formula with optic brightener that activates as you swish, reflecting light and leaving your teeth looking whiter instantly. Instant Whitening: Promotes whiter teeth after the first rinse. Daily Stain Defense: Provides daily defense against stains, helping to maintain whiter teeth over time. Refreshing Taste: Offers a great refreshing taste for a pleasant mouthwash experience. Colgate Optic White Mouthwash is designed to provide instant whitening effects while also offering daily stain defense for maintaining whiter teeth over time. As with any mouthwash, it's important to use as directed and in conjunction with regular dental hygiene practices, including brushing and flossing. If you have specific concerns about teeth whitening or oral health, it's advisable to consult with a dentist.