Green Marketing Campaigns, Authenticity, and Brand Loyalty among Millennial Consumers

Purpose: This study aims to synthesize the existing literature on the effectiveness of green marketing campaigns in building brand loyalty among millennials, with marketing authenticity positioned as a moderating factor. The study addresses the limited understanding of how green marketing initiatives translate environmental awareness into sustained brand loyalty, particularly in emerging market contexts such as Indonesia.

Research Methodology: A qualitative Systematic Literature Review (SLR) was conducted using peer-reviewed journal articles, conference proceedings, and academic theses published between 2015 and 2024. Relevant studies were identified through searches of Scopus, Web of Science, and Google Scholar using keywords related to green marketing, brand loyalty, millennials, sustainability, authenticity, and environmental awareness. The collected literature was analyzed through thematic synthesis.

Results: The review identified four major themes: environmental knowledge, environmental concern, and perceived consumer effectiveness as drivers of green purchasing behavior; determinants of millennial brand loyalty, including customer experience, social media engagement, economic factors, and perceived value; the influence of green marketing strategies such as eco-labels, green advertising, social media campaigns, and sustainability claims; and the mediating role of brand trust and marketing authenticity in strengthening the relationship between environmental awareness and brand loyalty.

Conclusions: The effectiveness of green marketing among millennials depends on authenticity, transparency, and credible sustainability practices. Brands that align environmental messaging with millennial values and demonstrate genuine sustainability commitments are more likely to develop long-term brand loyalty.

Limitations: The study relies on published literature and may be subject to publication bias. The predominance of studies from developed countries may limit direct applicability to Indonesia.

Contributions: This study extends green marketing literature by highlighting marketing authenticity as a key mechanism linking environmental communication to brand loyalty in the millennial segment.