The Photoshop Express Discover feed aims to recommend posts from a variety of content creators, not just the popular ones. We redesigned the recommendation algorithm based on collaborative filtering to predict interested topics by using recent post interactions from users. Our algorithm evolves as the user continues to interact with the product and promotes content based on users’ subject interests. This solution will help users explore and expand their individual interests and find communities to share creations, leading to more content sharing and boosting engagement.