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Premature greying of hair has been observed with greater frequency among certain families, suggesting a familial predisposition for the condition. As hair pigmentation is a result of complex interaction between various genetic factors, it is thought that premature greying could be due to exhaustion of melanocyte 's capability to produce hair ...
A 1996 British Medical Journal study found that tobacco smoking was correlated with premature greying. Smokers were found to be four times more likely to begin greying prematurely, compared to nonsmokers. [21] Grey hair may temporarily darken after inflammatory processes, after electron-beam-induced alopecia, and after some chemotherapy regimens.
Here, dermatologists explain why hair turns gray or white, the illnesses that could cause gray hair, and reasons for premature graying.
"In some cases, vitamin B-12 deficiency, thyroid issues, or pituitary problems can lead to premature graying," Dr. Gohara says. A study examining premature graying in people under 20 indicated ...
A few gray and white hairs will blend in visually, but semi-permanent dye alone will not usually give the desired result where there is a lot of gray or white hair present. Sometimes a mixture of dyes is used while hair is greying: semi-permanent as a base color, with permanent highlights. Semi-permanent hair color cannot lighten hair. [23]
Time in the summer sun can give you more gray hairs by damaging the cells that produce melanin, which gives your hair color. ... So, sun damage can lead to premature graying and damage existing ...
The slightly more scientific answer is that as your hair follicles (and you) age, they produce less color, so when you go through the natural cycle of shedding and growing new hairs, they’re ...
Canities subita, also called Marie Antoinette syndrome or Thomas More syndrome, is an alleged condition of hair turning white overnight due to stress or trauma. [1] The trivial names come from specific cases in history including that of Queen Marie Antoinette of France whose hair was noted as having turned stark white overnight after her capture following the ill-fated flight to Varennes ...