|Abstract||This study explored how characteristics of mental health messages affected college students perceived risk of seeking social support on university campuses. Using the dual-process theory of supportive communication as a theoretical lens, we examined how person-centered mental health messages affected students (a) perception of risk of seeking social support, (b) their health-related efficacy, and (c) their overall college success. Participants (n = 342) from a small, private, southern university were surveyed about their experiences and perceptions of mental health campaigns. Results indicated that highly person-centered health messages decreased students perceived risk of seeking social support and increased their health-related efficacy. Additionally, studentsâ€™ perceived risk of seeking support mediated the association between person-centered messages and health-related efficacy. Research questions addressing the role of various message-specific structural and sender variables indicated that only source credibility significantly affected students health-related efficacy and college success. Overall, these results further our understanding of how the perceived risk of seeking social support and health-related efficacy affect students motivation, satisfaction, and empowerment in college.