Dupilumab is a humanized IgG4 monoclonal antibody that targets the IL-4 receptor inhibiting the signaling of interleukin-4 and interleukin-13, two major cytokines in type 2 inflammatory diseases such as atopic dermatitis, asthma and nasosinusal polyposis. Since its approval for atopic dermatitis in 2017, the molecule has occasionally been used off-label in several dermatological conditions where standard treatments are often disappointing.Furthermore, what emerges from the data currently in the literature is a favourable safety profile with few, reversible side effects.