In a cultural context of the narcissistic era, people are becoming more individualistic and self-centered. One of narcissistic behavior is to invest time and effort into appearance management. Therefore, this purpose of this study is to examine the effect of narcissistic tendencies on appearance management behaviors and interpersonal relationships. As a research method, a survey using a questionnaire was used. The total sample size of 345 women was socially active and varied in age from 20s to 50s. The data were analyzed using frequency, factor analysis, reliability test, correlation analysis, and multiple regression analysis. The results of this study are summarized as follows. First, self-consciousness showed statistically significant effects on all sub-factors of appearance management behaviors. Other-consciousness showed a significant effect only on weight management among appearance management behaviors. Second, self-consciousness had a considerable impact on all sub-factors of interpersonal relationships except for self-centeredness. The other-consciousness had a significant effect on all sub-factors of interpersonal relationships. Third, weight management affected the attitude of others and self-centeredness among the influence of appearance management behaviors on interpersonal relationships. Hair management was affected by over-involvement, clothing management was affected by attitude toward others, and plastic surgery management was affected by attitude toward others, over-involvement, and self-centeredness. In conclusion, this study’s group of women with narcissistic tendencies found themselves using appearance management and interpersonal relationships. Women tended to be more narcissistic; women showed more involvement in appearance management and interpersonal relationships. Therefore, when women's social activities increase, interpersonal relationships become active and take more effort and interest in their appearance management. By identifying the narcissistic tendency of women in their from to 20s 50s, This study found the factor influencing appearance management behaviors and interpersonal relationships and contribute to the fashion and beauty industries.