The ScienceShutterstockBehind Grays
It's long been believed that we go gray when the cells in the hair follicle (called melanocytes) stop injecting the strands with melanin. For most people those first errant strands start popping up sometime in the mid-30s to early 40s, but for others it occurs even earlier than that. The result: an unpigmented hair that, despite its gray appearance, is actually white.
"Each hair follicle stops producing melanin at different times so the combination of white hairs lying against other colored strands, makes them appear gray," says Perry Romanowski, a cosmetic chemist in Chicago.
But a breakthrough three years ago at the University of Bradford in Great Britain found that was only half of the gray hair puzzle. They discovered that youthful hair cells produce hydrogen peroxide that's easily converted into hydrogen and oxygen. But as we age, even that system starts slowing down leaving hair to (essentially)Read More »from The Best Ways to Cover Those Grays