As social media platforms continue to evolve, the rapid evolution has significantly transformed consumer behavior, particularly among generation Z. TikTok has emerged as a particularly dominant force and therefore this thesis investigates the influence of TikTok User-generated content on impulsive buying behavior towards beauty products among generation Z. Through a qualitative analysis the authors explore the intricate dynamics of TikToks UGC, aiming to uncover trends and patterns that trigger impulsive purchases.  Drawing on semi-structured interviews with Generation Z beauty consumers, the study investigates how TikTok's unique features and content dynamics drive impulsive purchases. The analysis focuses on identifying key trends and patterns in UGC that contribute to spontaneous buying decisions, as well as understanding the role of authenticity, trust, and emotional engagement in this process. The findings reveal that individuals who spend more time on TikTok are more likely to exhibit impulsive buying behavior. Key factors influencing these behaviors include the perceived honesty and expertise of influencers, the relatability and aspirational qualities of content creators, and the repeated exposure to products. Limited editions and perceived exclusivity further amplify the urgency to purchase. TikToks video format, which provides immediate and relatable visual proof of products effectiveness, plays a crucial role in driving these impulsive buying decisions. This study underscores the importance for brands to strategically leverage TikToks platform to engage with Generation Z consumers effectively. By creating honest, relatable content and utilizing the power of repeated exposure, brands can enhance consumer engagement and drive sales, fostering long term trust and loyalty among Generation Z consumers.