Background: Transgender women face significant health inequities. Facial feminization surgery is an intervention that aligns craniofacial structures with female anatomical norms and gender identity. Although international studies suggest that facial feminization surgery improves psychosocial outcomes, most studies have focused on aesthetic results or relied on generic quality-of-life instruments that have not been validated for this population. In Chile, no study has evaluated the multidimensional impact of facial feminization surgery using patient-centered measures combined with objective cephalometric and photometric analyses. Moreover, no validated Spanish-language quality-of-life instrument exists for transgender women undergoing this surgery.