A puffy face after a salty dinner is common. A rounder face caused by a serious hormone disorder is much less common. The problem with the “cortisol face” trend is that it often treats both as the same thing. Across social media, people use “cortisol face” to describe facial puffiness, fullness in the cheeks, under-eye swelling, or a face that looks different from week to week. The implied cause is usually stress. More stress means more cortisol, and more cortisol supposedly