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Author Topic: How does hair know when to stop growing?  (Read 1922 times)

Offline ...lets split up...

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How does hair know when to stop growing?
« on: 16/08/2010 13:22:06 »
i've always wondered why some hairs on your body grow to a certain length and then seem to stop growing, or at least slow down. I suspect it might work the same way a dogs coat doesn't keep growing, but if you shave a patch it grows back.

How does your body register the length of your hair? Is it maybe a sensitivity to light? How does it work?
« Last Edit: 16/08/2010 13:24:06 by ...lets split up... »


 

Offline MartinTheK

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How does hair know when to stop growing?
« Reply #1 on: 16/08/2010 16:17:40 »
I must quote the late great Shel Silverstein...

My beard grows to my toes
I never wears no clothes
I wraps my hair around my bare
and down the road I goes!
 

Offline RD

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The Naked Scientists Forum

How does hair know when to stop growing?
« Reply #2 on: 16/08/2010 16:56:57 »

 

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