The paper discusses how discounting via social media impacts impulsive purchase behavior and brand loyalty among generation Z consumers, based on the statistical analysis of the data involving 353 participants, flash sales and promotional codes mostly produce new transactions but they develop the relationships between the consumers and the brand on a transactional, price-sensitive scale, rather than a lasting affective one. One interesting observation establishes social evidence especially through influencer recommendation as the dominant force behind brand trust at temporary promotional stages. The factual data indicate that discounting alone cannot serve to maintain long term retention but rather companies need to introduce plausible social evidence to move consumers away towards short term reactions and long-term compliance. These are the findings that give strategic advice to marketers working in the competitive social commerce environment.