why does the hair on our head grow longer compare to other parts of the body hair?
337043
The hair follicles on our head are different in structure from those that produce body hair. The length of body hair is determined by our genes (some folks are shaggier than others) but will never get as long as the hair grows on your head.\n\nWhen a hair follicle enters a new growth period, it starts to secrete the proteins that make up a hair shaft. The new hair grows out from the root plexus of the follicle until it pushes the old hair out, and then continues growing for a genetically determined amount of time. For body hair, it tends to grow for only 3-6 months and it grows at a slower rate. Then the follicle goes into a dormant stage again. Hair on the head grows at a fairly constant rate year round, and the hair shafts are generally thicker and stronger. Areas like the armpit, pubic area, and men's beards tend to be somewhere in between, as they do grow at a constant rate and can get fairly long if not trimmed.
603921
It is true that certain ethnicity's do have more, and thicker body hair, than others do. This is because, body hair is a trait that is inherited, from genes. Thick body hair is an inherited trait, that is common in certain groups from specific parts of the world. It has been passed down through the generations, and is still quite prevalent, even today, because specific groups tend to marry, within their own specific ethnic groups.
326752
Grow older.  As a man ages his facial hair growth increases.  But not too old as hair begins to grow thinner again as it begins to grey.\nMassage increases blood supply to the folicles and speeds hair growth, although a face massage is wierd.\n\nShaving does not encorage growth of hair - the reason why there is an old wives tale that it does is that hair grows thicker and darker all the time (until old age) so the new growth appears to be thicker only because it would have been that thick anyway if it had been left alone for the amount of time the hair will need to grow back.
74539
Your eye brows (that you probably pluck) are there to protect your eyes from blinding sunlight, dust, and sweat.  Your nose hairs (which you probably don't even know you have) help filter out debris from entering your lungs.  If you are a woman, the hair on your head believe it or not attracts the attention of men.  As for the rest of it, well...,depends on your personal beliefs.  I think that we are primates, which are all hairy.  All mamals have hair, even dolphins and whales.
79162
They all have limits it's just that some are longer then others and it depends on the person. Some peoples hair will grow longer then others.
395424
The hair follicles age at differnet rates on different parts of your body.
1106215
Just be happy you live at this point in human evolution and not tens of thousands of years ago, we used to be covered with hair head to toe.  As body hair became less necessary, we gradually evolved to the point where body hair is very light except for certain areas like the face, underarms and groin.  Eventually, it's possible that all body hair will be bred out of the species and mankind will be hairless.
145710
If you are talking about the beard, then its some way controllable and somewhat uncontrollable. At a certain age, you'll generate hormones to grow them, based on your genetic pattern. But, shaving very frequently generally stimulates hair growth.\n\nIf you are talking about the head, don't really know.\n\nIf somewhere else, then ...
65903
Actually, BOTH stop growing.\n\nOnce a hair has been growing for  a certain period of time, that hair falls out, and a new hair begans growing from the follicle.\n\nThe differience is that that time period is much shorter for the hairs on your arms than on the hairs on your scalp.\n\nA possible explanation is that are brain is one of the most sensitive and important parts of the body, and requires more protection from the weather, but really it's just how we turned out.\n\nMaybe it's just that we prefer people who aren't going bald, but don't look like an ape either. Those people have a higher chance of producing offspring, etc.
31307
Each person has a  different limit to how long his or her hair can grow, but don't reach it since it is generally socially unacceptable. Most people can't grow hair much past their tushes...
104133
just remember, if it's meant to make hair grow faster on your head, it will grow faster EVERYWHERE! you may get the beautiful mane you were seeking, but your legs will swear they belong to a gorilla! Just be careful of how much you do with ANY chemical, and make sure you read ALL the instructions AND SIDE AFFECTS!
638206
i think because pubic hair is thicker than other hair we have..........
80428
Body hair is governed by your genes. There are things you can do to remove it, or to lighten it, but you cannot do anything about its growth rate. There are some products out in the market that is suppose to retard hair growth, but I don't know how effective they are.
818255
All hair on the body, including individual hairs on the head, grow for a while & then rest for a while. The length of time this takes is called the refractory period. The refractory period for eyelashes is much shorter than for head hair, so the eyelashes will fall out sooner & also start growing back sooner than a head hair will. \n\n;-)\n\nWikipedia has a very informative article on hair follicles:\n\nhttp://en.wikipedia.org/wiki/Hair_follicle
486444
Men have more male hormones near the genitals that tend to stimulate hair growth thus we have more hair there
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.
164742
Yes, me too.\nI wonder whether the hair does not exactly grow faster, but just continues to grow at a steady pace until it becomes more noticeable.\nI think it is a hormonal thing, just another aspect of male secondary sexual characteristics. Some post-menopausal women are also surprised by the appearance of hair here and there as their oestrogen/testosterone balance changes.\n\nAs an ex-hippy (part time) I feel that I should be comfortable with hair; we should unite and demonstrate against capitalists who are brainwashing us into spending money to remove 'unsightly, unwanted hair'.