Scan Nail is an AI-powered web application that allows users to preview nail designs on their hands before making a purchase. The goal of this project is to enhance the online shopping experience for beauty and nail products by increasing engagement and reducing uncertainty during the buying process. The system uses a modern web interface combined with AI-based visualization concepts to simulate realistic nail design previews. Built with a focus on user experience, performance, and clean UI, the application demonstrates how AI can improve e-commerce conversion in the beauty industry.