Doll Lash Lounge is a prestigious web-based application that revolutionises eyelash service booking by combining functionality with a luxurious user experience. Built with Flask and MySQL, the system features secure user authentication, automated email notifications, and an intuitive booking interface for clients while providing comprehensive appointment management tools for administrators. The implementation has significantly improved operational efficiency by reducing manual booking errors and administrative overhead, while enhancing customer experience through streamlined appointment scheduling and management. This project not only showcases the successful integration of technology in traditional beauty services but also serves as a blueprint for small businesses seeking to modernize their operations through digital solutions.