British dermatologists held a set of experiments and found out that by the age of 50, 50% of the world’s population has at least 50% gray hair. Additionally, fair-skinned people’s hair starts to turn gray after 30, Asian people’s hair — at approximately 40, and the hair of people with dark skin — after 40. It’s a natural process called depigmentation; however, sometimes gray hair might start to appear at 20 or 30. Why does this happen?
from BrightSide RSS https://brightside.me/inspiration-health/scientists-explain-the-reasons-for-graying-hair-and-ways-to-slow-the-process-down-515810/
via IFTTT