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Grey or white hair is not caused by a true grey or white pigment, but is due to a lack of pigmentation and melanin. The clear hairs appear as grey or white because of the way light is reflected from the hairs. The change in hair colour occurs when melanin ceases to be produced in the hair root and new hairs grow in without pigment.
What causes gray hair in your 20s? Gray hair is an inevitable part of life; however, when your hair actually begins to start graying is determined by a slew of factors. "Gray hair in your 20s can ...
Gray or white hair is not caused by a true gray or white pigment, but is due to a lack of pigmentation and melanin. The clear hairs appear as gray or white because of the way light is reflected from the hairs. Gray hair color typically occurs naturally as people age (see aging or achromotrichia below).
Cause of greying is incompletely understood. It is a complex multi-factorial process mainly considered to be an interplay of nutritional, genetic and environmental factors. Stress causing over-activation of the sympathetic nervous system increases noradrenaline release in hair follicles .
Luckily, recent research has discovered why and how hair starts going gray—and it also may lay the framework for reversing it down the road. Bear in mind that these are early findings, and it ...
A study links graying hair to stem cells getting stuck, unable to color new hair growth. And here's the good news: That might mean gray hair is reversible.
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