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<span>Get whiter teeth in just 1 day* with Colgate Optic White Express Teeth Whitening Pen. This proven formula is powered by hydrogen peroxide—the same whitening ingredient used by dentists—to remove tough stains. Plus, Colgate Express ensures enamel safe teeth whitening and is designed for no tooth sensitivity during and after the whitening process. How does it work? Powered by hydrogen peroxide, this easy-to-use whitening pen with a precision tip applicator offers a glowing smile after just 3 applications.* Now, you can get whiter teeth in just 1 day* with Express Teeth Whitening. Achieve teeth whitening at home with fast results for a glowing smile. Is it safe for enamel? Yes, Express Teeth Whitening Pen is enamel safe for daily use. This teeth whitener uses a dentist-recommended ingredient to dissolve stains without compromising enamel. Will it cause sensitivity? This pen is specifically designed for no tooth sensitivity during and after the whitening process. Optic White’s at home whitening super-charges your daily teeth whitening routine with the same ingredient used by dentists. Let’s get glowing! *When used as directed, see product packaging</span>