Many studies have examined how defendant characteristics influence jury decisions, but none have investigated the effect of cosmetics. We therefore examined how cosmetics influence jury decisions for young and middle-aged female defendants. In Study 1, participants were more likely to assign guilty verdicts to middle-aged defendants than young defendants and when presented with cosmetics, male participants gave young defendants longer sentences and middle-aged defendants shorter sentences. In Study 2, however, we did not replicate the age or the cosmetics effects on jury sentences, suggesting that comparisons between defendants may have influenced jury decisions in Study 1. Further work is thus still needed, but our two well-powered studies (N = 1127) provide a first exploration into the influence of cosmetics on jury decisions.