Research consistently finds that physical appearance influences hiring decisions in ways that most employers would be reluctant to admit. Among the appearance factors that have been studied, facial features — including skin conditions, scars, asymmetries, and other perceived imperfections — have been found to affect how candidates are evaluated in job interviews.

This is uncomfortable but well-documented territory. Studies using identical resumes attached to photographs that differ in perceived attractiveness consistently find that more conventionally attractive candidates are rated higher on competence, warmth, and hireability — even by trained evaluators who have been told to focus on qualifications.

Facial conditions that deviate from expected norms — acne scars, birthmarks, facial palsy, significant asymmetry — have been found to trigger unconscious negative assessments in contexts where people are making quick evaluations. The "what is beautiful is good" heuristic, well-established in social psychology, works in reverse: what appears unusual or imperfect can trigger subtle downgrading.

The implications are ethically serious. Most anti-discrimination law does not protect against appearance-based bias except where the appearance is the result of a disability covered under the ADA. The gap between what the law prohibits and what research demonstrates actually happens leaves a wide space in which bias operates unchecked.

For candidates navigating this landscape, the practical advice is limited and unsatisfying: put your best foot forward, demonstrate competence and warmth clearly, and recognize that the most important thing you can control is the substance of your answers. For employers serious about equitable hiring, the research argues strongly for structured interviews with standardized questions and multiple evaluators — processes that reduce the influence of any single person's snap judgments.