Examining the impact of influencers’ credibility dimensions: attractiveness, trustworthiness and expertise on the purchase intention in the aesthetic dermatology industry Omayma AlFarraj Department of Marketing, University of Jordan, Amman, Jordan Ali Abdallah Alalwan Amman College for Financial and Managerial Science, Al Balqa Applied University, Amman, Jordan Zaid Mohammad Obeidat Department of Marketing, University of Jordan, Amman, Jordan Abdullah Baabdullah Department of Management Information Systems, Faculty of Economics and Administration, King Abdulaziz University, Jeddah, Saudi Arabia Rand Aldmour Management Information Systems Department, School of Business, The University of Jordan, Amman, Jordan, and Shafig Al-Haddad Department of E. Marketing, King Talal School of Business Technology, Princess Sumaya University for Technology, Amman, Jordan Abstract Purpose – This study aims to investigate the influencers’ credibility dimensions (i.e. attractiveness, trustworthiness, expertise) on purchase intention (PI) through the mediating role of cognitive and affective online engagement among the aesthetic dermatology consumers in Jordan. Design/methodology/approach – The population of this study entails all followers of aesthetic dermatology clinics on their Instagram accounts. However, only three influencers from the aesthetic dermatology industry were selected and approved the request of sharing the survey instrument on their official platforms. Overall, 600 surveys were distributed, but only 384 were completed fully, constituting a 64% response rate. Findings – The data analysis revealed an excellent fit for the data and indicated an impact of attractiveness and expertise on online engagement and PI. Moreover, a mediating influence was also found for online engagement on the path between influencer credibility and PI. Research limitations/implications – This study has a limitation of collecting the data from only three influencers; consequently, collecting data from the followers of more than four influencers would get more generalizable results. Second, considering further, examining the mediating role of other variables such as Mediating role of online engagement Received 29 July 2020 Revised 7 October 2020 5 December 2020 Accepted 28 December 2020 Review of International Business and Strategy © Emerald Publishing Limited 2059-6014 DOI 10.1108/RIBS-07-2020-0089 The current issue and full text archive of this journal is available on Emerald Insight at: https://www.emerald.com/insight/2059-6014.htm