Features:<br> Multifunctional: Whether you are dealing with stubborn stains, yellowing, or just want a brighter boost, a quick daily application helps you smile with confidences.<br> Powerful: The advanced formulas breaks down years of built-up stains at the enamel level while being gentle enough for sensitive teeth.<br> Extra Strength Cold Serum Formulas targets deep stains from coffee, wine, and more<br> No Sensitivity, Just Brightness: Our gentle formulas is designed to be effective without causing tooth or gum sensitivity — safe for daily use.<br> Portable & Easy to Use: Compact pen design fits easily into your bag or pocket. Apply anytime, anywhere<br> Notice:<br> 1.Actual color may be slightly different from the image due to different light effect<br> 2.Please allow 1-3cm deviation due to manual measurement<br> <br> Net content: 2ml<br> Size: 1.3x12.7cm<br> Package List:<br> 1x 2ml Teeth Brightening Cold Serum Pen