The aims of this study were to: (a) investigate the effect of Face-book on young women’s mood, body dissatisfaction, weight andshape discrepancies and face, hair, and skin-related discrepancies;(b) investigate if the effect of Facebook differed from the influenceof an online fashion magazine; and (c) investigate if appearancecomparison tendency moderated this effect. We found that womenreported being in a more negative mood after brief exposure toFacebook than after exposure to an appearance-neutral website,and that for women who are high in appearance comparison ten-dency, spending time on Facebook lead to greater face, hair andskin-related discrepancies. The finding that exposure to Facebookinduced a more negative mood in young women is consistent withprevious research showing that brief exposure to Facebook ledto more negative mood for both men and women (Sagioglou &Greitemeyer, 2014). One possible reason for these findings is thatFacebook provides women with a means for comparing themselveson a broad range of dimensions (beyond just appearance), such associal status and life experiences. For example, similar to the find-ings of Chou and Edge (2012), women may be judging others onFacebook to be happier or have better lives than them, which inturn could induce a more negative mood.