How does hair know when to stop growing?

  • 2 Replies
  • 1947 Views

0 Members and 1 Guest are viewing this topic.

*

Offline ...lets split up...

  • Sr. Member
  • ****
  • 102
  • I love lamp
    • View Profile
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... »
I love lamp

*

Offline MartinTheK

  • Sr. Member
  • ****
  • 135
    • View Profile
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!