Features: 1. **Effective Stain Removal**: Our Teeth Whitening Pen effectively removes tough stains from cigarettes, tea, wine, and coffee, restoring your bright smile effortlessly. 2. **Fresh Breath Formula**: Infused with xylitol and baking soda, this pen not only whitens teeth but also freshens breath, ensuring you feel confident all day long. 3. **Easy to Use**: Simply twist the pen, apply a thin layer to your teeth, and let it dry for a minute. Achieve noticeable whitening results in just 10-20 minutes! 4. **Portable and Convenient**: The compact 4ml design makes it easy to carry in your bag or pocket, allowing for on-the-go dental care whenever you need it. 5. **Safe and Gentle Ingredients**: Made with purified water and natural ingredients, our whitening serum is safe for daily use, providing a gentle yet effective solution for a brighter smile. Our Teeth whitening pens contain purified water, baking soda, xylitol and more. It freshens breath, cleans tartar, brightens teeth and removes stains. Its use method is very simple: after gargling, rotate the pen bottom, squeeze out a small amount of liquid to the tip of the pen. Apply a thin layer of liquid to the tooth and let it dry for a minute or two. After 10 to 20 minutes of whitening, rinse your mouth with water. Remove cigarette, tea, wine and coffee stains. Our teeth whitening serum is dedicated to restoring your best smile.