Abstract
This study investigates the relationship between social media use and subjective well-being among South Korean women in their 20s, with a particular emphasis on the moderating role of self-esteem. Cross-sectional data from 611 women in their 20s who had experience using social media platforms was drawn from the Korean Media Panel Survey 2021. A regression analysis revealed that increased social media use was associated with lower subjective well-being. Self-esteem acted as a moderator in the relationship between social media use and subjective well-being. Among individuals with low or medium levels of self-esteem, higher social media use was linked to decreased subjective well-being; however, for those with high self-esteem, social media use did not significantly impact subjective well-being. These findings underscore the significance of self-esteem as a protective factor in the context of social media use and its influence on the subjective well-being among women in their 20s.