Your hair has stem cells near the roots, and they help make your hair its natural color. But these cells need to move to a different part of the follicle and change to produce hair color. When these stem cells get “stuck” and can’t do their job, gray hair comes out instead, new research reveals.
from WebMD Health https://www.webmd.com/beauty/news/20230420/gray-hair-and-aging-stuck-stem-cells?src=RSS_PUBLIC
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