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re: How does my arm hair know to stop growing

Posted on 9/11/16 at 8:01 pm to
Posted by Volvagia
Fort Worth
Member since Mar 2006
51918 posts
Posted on 9/11/16 at 8:01 pm to
All hair have growth cycles.


Body hair is measured in days.

Head hair is measured in years.


Genetics determines how long a time period a hair follicle will grow before "resetting"
This post was edited on 9/11/16 at 8:02 pm
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