why do the hairs on the face and head grey quicker than those elsewhere on the body?
364625
The hair on the face and head are exposed to the sun the varying exposure conditions of the environments. The bodies metabolism is very week to stand that varying conditions it is subjected to. The roots are very week to take the heat of the sun and due to this the pigments of the hair changes into Grey.
651022
LOL, funny things what ya body does dont ya think!\nThe hair grows faster because the skin cells that react to the coldness of the atmosphere, then the hair cell inside the skin cell starts sprouting triggerd because of the nerves. The hair isnt is to keep your skin and nervous cells warm. \nHey and not just in antartica dude!\nI hope this helped you. \nKind Regards, Timothy H. (Age 12, W.A.)
49270
Grey hair occurs because there is a lack of pigmentation available to "color" the hair as it grows out of the follicle.  People gray at different rates, but losing pigment is uaully a genetic issue.  Did your parents grey prematurely?
395424
The hair follicles age at differnet rates on different parts of your body.
349434
Some years a go, a German scientist counted the hairs on different heads. He found that they vary in number, depending seemingly upon the color. There are more on a head with black hair than on a head with red hair, more on brown than black, more on blonde than brown. The black-haired woman has about 110,000 hairs on her head, and a blonde-haired woman has about 140,000. \n\nhttp://www.bibleline.org/hair.html\n\nEach human head carries roughly 100,000 hair follicles. \n\nhttp://www.pg.com/science/haircare/hair_twh_23.htm
948427
It's normal with aging.  As you get older the hair on your head decrease but in places like eyebrows, ears, nose, and often times the back as well, the hair increases.  I am not really sure of any reason other than nature
598740
I think I've heard that stress doesn't cause it, but I have to wonder. I've seen too many get grey hair in a hurry, after a stressful event.
413890
the same as why hair turns Grey the cells that produce the brown pigment stop working as well as when you are young or it could be a cataract
286061
The palms have different kind of cells compared to those in the back of the hand. The palm has all these fine lines that make gripping an object easier, hair would not have helped that much I think.Plus I guess its an evolutionary thing - imagine the hair in your palms getting pulled at when you do thing! Oww.
163057
Typically it is just genetics. Did others in your family (parents, grandparents) have early greying? \n\nUnfortuntately, the genetics of gray hair are not well understood. Hair coloring is due to the production of melanin by melanocytes in hair follicles.  For reasons that are not yet entirely clear, as we age the amount of melanin producted by these cells decreases and hair turns gray \nand then white.  While the age of onset of gray hair varies tremendously most people start to show some gray hair in their 30s.\n\nTiming and rate of graying do appear to have a genetic component but most likly involve muliple genes on different chromosomes rather tan a single gene.\n\nThe evidence for a genetic component is also found in families in which multiple members have premature graying (teens or early 20s) and in specific genetic syndromes such as progeria or Brooks syndrome which characteristically include premature gray hair.\n\nhttp://www.madsci.org/posts/archives/Sep2003/1064505603.Ge.r.html\n\nThere has been some association with early grey and smoking. Do you smoke? If so, stop. Will make your skin less wrinkled, as well!\n\nI think that Grecian Formula works very well at returning your hair color. Have to keep using it, but it works well.\n\nhttp://www.grecian-formula.com/\n\nHope this helps.
715703
Everyone has about the same amount of hair as an ape, it's just that it's finer and lighter coloured.  as a consequence the thicker and darker the hair the more noticeable it becomes.  Hair grown as the result of eating disorder is called Lanugo and is a downy covering of most of the body.
189834
We all have different amounts of melanin in our skin. If we have less, our skin is lighter. If we have more, our skin is darker.
991573
It probably has to do with the denaturing of proteins within the hair. Check out the website it might answer your question more thoroughly.
1094843
Poor hygiene and lacks in care weaken hair and this also result occasional itching on skull. It may be genetically  inherited too.\nSituation may improve if personal hygiene is maintained, proper hair-care is taken and a balance diet is practiced. \nIt has been seen Vitamin E also helps  sometimes in having stronger hair.\nOne more amazing fact is, most sexy guys have weak or less hair on their heads, since sex hormone predominates collagen which is responsible for growth and strength of ones hair.
581410
In general, most things that happen that signify age, from infanthood to old age, are genetically regulated development processes.  At some point, in those who carry the genetic predisposition, certain proteins will start to be expressed, and others will be decreased-Though it's unclear the exact genetic cause of gray hair, this is likely the cause.  Support for this hypothesis comes from the fact that not all people turn gray, that it has no clear relationship with health or longevity, and that some people turn gray quite young- All these point to a genetically controlled developmental change.
666792
Nearly all the skin of the human body except palms of hands and soles of feet is covered with hairs. The density of the hairs (in hair follicles per square centimeter) thickness of the hairs, color of the hairs, speed of hair growth, and qualities such as kinkiness, vary from one part of the body to another, and from one person to another. All of these features have strong genetic determinants, as demonstrated by the heritability of these qualities.\n\nDoctors generally distinguish scalp hair, vellus hair, and androgenic (terminal) hair. \n\nVellus hair is the hair on the rest of the body which has not been stimulated and transformed by sex hormones. Androgenic hair is the hair that greatly increases in heaviness and rate of growth with puberty.
800782
That's because they choose to shave their hair, not because they are natural bald. A bald head is much easier to manage than something like an Afro.For example thick, curly hair that they have do dry as quickly after washing.