Seen through Zahra Hankir’s (kohl-lined) eyes, this ubiquitous but seldom-examined product becomes a portal to history, proof both of the stunning variety among cultures across time and space and of our shared humanity. Through intimate reporting and conversations—with nomads in Chad, geishas in Japan, dancers in India, drag queens in New York, and more— Eyeliner embraces the rich history and significance of its namesake, especially among communities of color. What emerges is an unexpectedly moving portrait of a tool that, in various corners of the globe, can signal religious devotion, attract potential partners, ward off evil forces, shield eyes from the sun, transform faces into fantasies, and communicate volumes without saying a word.