#Reels is used to tag and discover short, engaging videos on Instagram and TikTok. It’s a popular hashtag for content created using Instagram’s Reels feature, which allows users to create and share short, creative videos set to music or audio. This hashtag helps increase the visibility of Reels content and connect with users interested in trending or entertaining short-form videos. People use it to share creative, engaging, and entertaining videos that are typically under 60 seconds long. It's popular among content creators, influencers, and those who enjoy consuming short-form video content.