Social Media Marketing, e-WOM, and Purchase Decisions: The Mediating Role of Brand Trust

Authors

  • Tifani Rahma Aulia Universitas Negeri Surabaya
  • Anik Lestari Andjarwati Universitas Negeri Surabaya

DOI:

https://doi.org/10.70062/harmonieconomics.v3i1.456

Keywords:

Brand Trust, e-WOM, Online Buying Behavior, Skincare Consumers, Social Media Marketing

Abstract

The rapid growth of digital technology and e-commerce has transformed consumer behavior, particularly in the skincare industry. This study investigates the influence of Social Media Marketing (SMM) and electronic Word-of-Mouth (e-WOM) on online purchase decisions, with Brand Trust as a mediating variable. Data were collected from 205 Shopee consumers of the skincare brand Skin1004 using an online questionnaire. Partial Least Squares Structural Equation Modeling (PLS-SEM) was employed using SmartPLS 4 to assess the measurement model, structural model, and mediation effects. The results reveal that both SMM and e-WOM significantly enhance Brand Trust and Purchase Decisions. Additionally, Brand Trust partially mediates the relationships between SMM and Purchase Decisions and between e-WOM and Purchase Decisions. These findings underscore the pivotal role of Brand Trust in optimizing social media marketing and e-WOM strategies to influence consumer purchasing behavior in e-commerce settings.

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Published

2026-02-04

How to Cite

Tifani Rahma Aulia, & Anik Lestari Andjarwati. (2026). Social Media Marketing, e-WOM, and Purchase Decisions: The Mediating Role of Brand Trust. Harmoni Economics: International Journal of Economics and Accounting, 3(1), 34–45. https://doi.org/10.70062/harmonieconomics.v3i1.456