Effective Nail Biting Prevention: Nail biting treatment has an extremely bitter taste that helps break the habit of nail biting, effectively deters nail biting and thumb sucking, and can improve within a few weeks of continuous use Natural Plant-Based Ingredients: Our nail care pen features a plant-based formula that is gentle on the skin, ensuring a safe experience for everyone Convenient and Portable Design: The rotating pen shape is perfect for on-the-go applications, making it easy to carry and apply anywhere, ideal for use at home, school, or in the office Quick-Drying and Invisible Finish: Dries in just 10 seconds, leaving a non-sticky, invisible layer, enjoy daily activities without disruption while using our effective nail care solution Long-Lasting Bitter Taste: Thumb sucking deterrent pen lasts 6-8 hours after one use, The durable bitter flavor effectively stop nail biting, reinforcing positive behavior and helping you develop healthier nail habits and nail care.