The science of hair color, or lack thereof, isn’t very well understood. Many questions remain as to why old age and extreme stress can cause hair to turn gray. Now, new research has advanced our scientific understanding of the graying process — and may be a step toward its prevention. The science of hair color, or lack thereof, isn’t very well understood. Many questions remain as to why old age and extreme stress can cause hair to turn gray. Now, new research has advanced our scientific understanding of the graying process — and may be a step toward its prevention.
