Objectives: To examine the effect of social media marketing activities on repurchase intention through brand trust and brand attachment among Indonesian Generation Z Skintific consumers. Methods: Quantitative research involving 210 respondents selected through purposive sampling, analyzed using PLS-SEM with SmartPLS 4. Research Gap/Novelty: Integrates brand trust and brand attachment as mediating mechanisms linking social media marketing to repurchase intention. Results: Social media marketing positively and significantly influenced brand trust, brand attachment, and repurchase intention. Both mediators significantly enhanced repurchase intention. Conclusion: Effective social media marketing strengthens consumer relationships and encourages repeat purchases.
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