Two experiments tested whether cyberostracism increases people's perceived moral impurity and their tendency to purchase cleansing products. In both experiments, participants were first either ostracized or included in a web-based social interaction. Next, they completed self-report measures to assess their perceived moral impurity and tendency to purchase cleansing products. The results showed that participants who were ostracized reported a higher level of moral impurity and a higher tendency to purchase cleansing products. These findings advance our current understanding on the effect of online social interaction on people's moral self-perception. Copyright © 2019 Taylor & Francis Group, LLC.