TEETH WHITENING X1 touch-up pen. This whitening pen is designed for quick touch-ups. Its stain-fighting formula effectively targets discoloration. Featuring a flexible tip, it easily gets into the spaces between teeth for a thorough clean. Compact enough to fit in your pocket, it's perfect for on-the-go use. Best when paired with other Beconfident whitening products, it acts as a localized intensifier. Benefits: • Peroxide-free formulation.