This study aims to understand the influence of authentic marketing on the formation of trust between brands and customers and consumers’ purchase intentions and to analyze the role that brand trust has in this process. In doing so, it examines the specific aspects of authentic marketing that increase brand trust and contribute to the formation of purchase intentions, which could then be leveraged as key elements of a company’s marketing strategy. Data in this study was used frequency analysis and factor analysis through SPSS 26.0, and reliability analysis using Cronbach’s alpha coefficient. Subsequently, confirmatory factor analysis, path model analysis, and mediated effect analysis were performed using AMOS. Finding indicate that, identity and truth in authentic marketing had a positive effect on brand trust but heritage and reality did not affect brand trust. It was also found that the factors of identity, heritage, reality, and trust did not significantly affect purchase intention. Additionally, brand trust was found to have a positive effect on purchase intention. Finally, the analysis indicates that brand trust plays a mediating role in the process of forming purchase intention through the factors of identity and truth in authentic marketing. Therefore, the core of authentic marketing is the sincere relationship between companies and consumers obtained from the clarity and integrity of messages, and in this process, mutual trust is built, which leads to product purchases. It can be surmised that the purpose of authentic marketing is to build relationships with consumers based on brand trust.

Fashion companies and brands’ marketing activities focus on resolving environmental problems; however, these companies’ efforts, there are some examples of so-called “greenwashing”. This paper aims to analyze different perceptions of brand authenticity, green marketing, and purchase intention toward the brand before and after exposure to case information about greenwashing. A total of 211 data were gathered and analyzed using SPSS 25.0. Respondents were asked to respond to same questionnaires related to green marketing and the brand authenticity before and after their exposure to greenwashing information. The study participants’ perceptions of green marketing from the brand were statistically significantly negatively changed after exposure compared to before exposure. Similar patterns in results were found in the context of consumers’ perception of brand authenticity (genuineness, originality, and consistency), and purchase intention. The originality of this study is in evaluating consumers’ perception of greenwashing focused on brand authenticity. The findings of the study suggest that if a fashion brand’s green marketing activity is perceived as greenwashing by consumers, the perceptions of green marketing, brand authenticity, and purchase intention can all decline. It is suggested that fashion brands need to develop a sincere and truthful green marketing campaigns to keep and enhance their brand authenticity.