In today’s digital age, e-commerce platforms have become an integral part of daily life. However, ensuring secure and seamless user authentication remains a critical challenge. This project proposes a Smart E-Commerce Platform integrated with Face Recognition-Based User Authentication using HAAR cascade to enhance both security and user convenience. The system leverages advanced facial recognition algorithms to authenticate users during login and sensitive transactions. By replacing traditional authentication methods such as passwords and OTPs with biometric verification, the platform reduces the risk of unauthorized access, identity theft, and account hacking. Users can securely log in by simply capturing their facial image using a device camera, which is then matched with the pre-registered facial data stored in the database. Additionally, the e-commerce platform is designed with intelligent features like personalized product recommendations using AI, real-time order tracking, and smart search filters to improve user experience. The combination of biometric security and intelligent automation makes the platform robust, user-friendly, and future-ready. This system is particularly relevant in scenarios where privacy and security are paramount. It not only streamlines the user journey but also ensures that sensitive information is protected through reliable, user-centric technology.