Features:_x000D_Multifunctional: Whether you are dealing with stubborn stains, yellowing, or just want a brighter boost, a quick daily application helps you smile with confidences._x000D_Powerful: The advanced formulas breaks down years of built-up stains at the enamel level while being gentle enough for sensitive teeth._x000D_Extra Strength Cold Serum Formulas targets deep stains from coffee, wine, and more_x000D_No Sensitivity, Just Brightness: Our gentle formulas is designed to be effective without causing tooth or gum sensitivity safe for daily use._x000D_Portable Easy to Use: Compact pen design fits easily into your bag or pocket. Apply anytime, anywhere_x000D_Notice:_x000D_1.Actual color may be slightly different from the image due to different light effect_x000D_2.Please allow 1-3cm deviation due to manual measurement_x000D_ _x000D_Description:_x000D_Net content: 2ml_x000D_Size: 1.3x12.7cmPackage List:_x000D_1x 2ml Teeth Brightening Cold Serum Pen