A STUDY SAYS GRAY HAIR MAY BE REVERSIBLE

Summary from the TLDR newsletter

Researchers have discovered one of the causes of gray hair: stuck stem melanocyte stem cells. The cells usually travel between compartments of developing hair follicles. They can't make the protein needed to pigment hair when they get stuck, unable to move back to the germ compartment. Making them move again could result in the production of pigment and the return of colored hair.