HK TEETH WHITENING PEN DUO 2CT. Benefits: Two Teeth Whitening Pens featuring Hello Kittypackaged in a festive cracker-style kit, perfect for gifting or sharing.. Gentle whitening formula with light-reflecting pigments for instant teeth brightening and urea peroxide for long-term whitening results with continued use.. Limited-edition Candy Cane flavor freshens breath and makes whitening feel fun and festive.. Easy, no-mess applicationjust shake, click, and paint onto teeth for a whiter smile!. Formulated with clean ingredients, safe for sensitive teeth.. Key Ingredients: Urea Peroxide: For effective, gentle whitening. Proprietary Elixir Blend: Lavender Oil (soothing), Strawberry Fruit Extract (whitening), and Honeysuckle Flower Extract (cleansing) to support a healthy-looking smile. Formulated Without: Parabens. Triclosan. Sulfates (SLS/SLES). Animal Products.