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[en] Highlights: • Excitons dominate the photophysical response of organic semiconductors. • Two-photon photoemission spectroscopy a powerful tool in probing exciton dynamics in organic semiconductors. • The ionization potential scale is used not only for ground states (i.e., valence bands or highest occupied molecular orbitals) but also for transiently formed excitonic states. - Abstract: An exciton is an atomic hydrogen-like quasi-particle, consisting of a Coulombically bound pair of an electron and a hole in conduction and valence bands, respectively. While excitons are traditionally investigated by optical spectroscopies, photoelectron spectroscopy can be a powerful tool in providing a unique view on the energetics and dynamics of excitons in semiconductor materials. The experiment typically relies on time-resolved two-photon photoemission (TR-2PPE) spectroscopy in which the first laser pulse creates excitons in a material and the second laser pulse ionizes the excitons for detection. In this short note, I discuss unique insights provided by TR-2PPE on exciton dynamics in organic semiconductors and challenges in the application of this technique.