Studies of social media and its uses have focused on how it shapes behavior but less so with emotion. Overcoming this limitation, this article investigates the role of emotion in understanding and shaping actions online, and how, conversely, different uses of social media are leveraged to manage and express emotions, focusing on Facebook and Instagram. To this end, this article draws on 24 in-depth interviews with youth users in Hong Kong to excavate practices of emotional labor and management online, which reveal (1) strategies to manage emotional reactions, centering on critical distance; (2) strategies to manage emotional conveyance by manipulating the temporality of the content they produce; and (3) the creation of a digital blasé that consisted of the atmosphere of Facebook and Instagram, sustained by general emotional detachment, the perceived need to detach, and a sense of “watchedness”. Throughout, emotional detachment was the default state that users entered into when using Facebook and Instagram, as an anticipatory reaction to the emotional exhaustion imposed by imagined content and into which they inevitably returned.