WHY does hair grow....?
830044
Ha! What an interesting question. Hair is regulated by our hormones, when a "child" becomes an adult and enter's their sexual maturity they start producing various sex hormones which causes hair in places to grow (unfortunately). Hair has many purposes: warm, decreases friction (with sexual activity), traps pheromones (especially arm pit, male facial hair, and genital hair) which in turn attracts the opposite sex.  The female population (at least many females that I know) spend a lot of time and money attempting to rid ourselves of hair . . . guess another purpose is served . . . supporting the economy! LOL!
253528
No. The only thing that can cause your facial hair to grow is genetics. Anybody that tells you any different and has no scientific proof is full of it.
309081
The idea of hair growing back darker, or thicker is simply a wives tale.  Especially in regards to waxing.  Every time you wax it is pulling out some of the hair follicles. A percentage of these follicles will not grow back.  In effect, over time the hair will grow noticably thinner.
393736
hair, because hair does not live once out of the follicle.
58294
You can do several things to help hair growth. The best is to take some vitamin E or increase vitamin E in your diet. Also scalp massage, getting regular trims, and some people swear by using horse shampoo and conditioner (gives you silky and shiney hair).
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!
417053
no... it grows when ur little, then it slowly grows from there...  read this  ...
1179078
Chemotherapy (one of the treatments for some kinds of cancers) can cause hair loss. It kills rapidly growing cells like those int he hair follicles or the linign of the gut.\nBut hair doesn't always fall out and there are things like cold caps that can be worn on the head to help prevent hair loss.
654501
You have two different types of bodily hair.  One is called terminal and the other is called vellus.  Terminal hair is the longer growing hair that is on your head, legs and things like that.  So, to answer why do they keep growing it is bc of the type of hair it is.  The vellus hair doesn't know how long it is....it only grows to a certain length according to your own body type.  I hope this helped a little bit
406005
It's too much testosterone converting in your scalp to deaden hair folicles. Usually genetic. Or it could be a health issue. Check your family or check with your doctor (usually dermatologist)
326933
No. That is an old wive's tale. Shaving does not make the hair grow any faster or thicker. Only time and genetics can make that happen.
836985
Dead stuff doesn't grow. Instead, what is perceived as "growth" is acually the surrounding tissues receding, or shrinking, as a result of moisture loss from the once living surrounding tissue. Hair and nails are mostly protein (keratin) and contain very little moisture (in comparison to skin cells) and thus don't shrink.
177261
If you shave, it may actually encourage hair growth.
469294
Hair is an interesting biological structure. What we usually think of as 'hair' is really just the part we see... that's the hair shaft, which contains pigment (a chemical that gives color to things). There is also a hair follicle, which is a multi-cellular structure inside the skin of our scalp that creates the hair strand (making it grow), and also is responsible for the pigmentation. Some of the cells in the follicle make the chemical melanin, which is a skin and hair pigment in many species on our planet. \n\nHair turns grey when the pigment cells in the hair follicle stop making melanin. When this happens due to aging, it's mostly under the control of the genes we inherit. Long periods of constant stress may also contribute, but a big shock won't turn hair grey overnight.
253485
I think it all depends on the person. Some people grow hair over night literally. I think mine takes awhile to grow. But people who know me and see me daily tall me my hair grows fast. In the winter I let my hair grow as well as growing a full beard. During the summer I shave my head and face. I do keep a van dyke. Either way I find that I need to sahve every other day. As far as length I can;t really tell ya that. But it does grow quick enough
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.
309124
hairs are to keep you warm. You lose a high percentage of heat from the top of your head, thereby you have lots of hair to cover it. Hairs on legs stand up to help when your cold. Unfortunatly hair on my head needs gel