The cosmetics industry in Indonesia continues to develop well, especially with the increasing demand for beauty products. This research was conducted to analyze and prove whether E-WOM and Brand Ambassadors influence Buying Interest with Brand Image as a mediating variable for Wardah cosmetic products at the University of Muhammadiyah Malang. This type of research uses a quantitative approach and uses primary data. Data was collected using a questionnaire of 160 respondents. The gathered data is subsequently analyzed using the Structural Equation Model - Partial Least Square (SEM-PLS) technique. The study's results prove that E-WOM, Brand Ambassador, and Brand Image significantly affect Buying Interest. In contrast, E-WOM and brand ambassadors positively and significantly affect brand image, which acts as a mediator. The Company must leverage these factors to improve its brand image and drive consumer purchasing decisions.