A groundbreaking study from NYU Grossman School of Medicine has shed new light on the causes of gray hair. It also focuses on the unique properties of melanocyte stem cells (McSCs) found in hair follicles. The study reveals that as people age, McSCs lose their ability to move between growth compartments in hair follicles. This ultimately affects hair color. The research improves our understanding of the mechanisms underlying hair pigmentation. It also opens up the possibility of developing treatments to reverse or prevent graying in humans. Published in the journal Nature on April 19, the study focused on cells present...