Hydrogen Peroxide (6%): Contains the maximum retail strength of hydrogen peroxide, the same ingredient used by dentists for effective whitening, helping to remove stains caused by common sources like coffee, tea, and red wine. Mess-Free Application: The twist-pen design allows for precise application without the need for messy trays, making it easy to use anytime, anywhere. Pleasant Watermelon Flavor: Offers a refreshing watermelon taste that leaves a pleasant aftertaste after application. Portable Design: Compact and lightweight, the pen easily fits into your bag or pocket, making it perfect for on-the-go whitening.