The trend of beauty products and awareness to take care of yourself has increased during the Covid-19 pandemic. PPKM (Enforcement of Community Activity Restrictions) and the increase were used as opportunities by Somethinc, one of the viral brands at that time. This study aims to analyze the role of brand image in mediating social media marketing on the purchase intention of Somethinc skincare products on Instagram users in Denpasar City. The method used is non-probability sampling with purposive sampling techniques. The number of samples used was 110 respondents who had never bought Somethinc skincare products. This research found that brand image partially mediates social media marketing and purchase intention. Next, it was found that all the hypotheses of this study were accepted. Based on the results of this study, it is suggested that a good brand image of consumer perception in terms of quality, users, visuals, and uniqueness of the Somethinc Brand can affect the application of social media marketing in increasing consumer purchase intention on Somethinc skincare products. The implications of this research theoretically contribute empirically to the relationship between brand image, social media marketing, and purchase intention, as well as practically as reference material for Somethinc companies in building a good brand image.