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From: hitz@mips.UUCP
Newsgroups: sci.med,sci.bio
Subject: Re: Hair growth
Message-ID: <1018@mips.UUCP>
Date: Tue, 12-May-87 22:43:41 EDT
Article-I.D.: mips.1018
Posted: Tue May 12 22:43:41 1987
Date-Received: Fri, 15-May-87 06:56:27 EDT
References: <1215@cci632.UUCP>
Reply-To: hitz@mips.UUCP (David Hitz)
Organization: MIPS Computer Systems, Sunnyvale, CA
Lines: 23
Keywords: hair grow cut shave follicle
Xref: utgpu sci.med:1685 sci.bio:312

In article <1215@cci632.UUCP> mark@cci632.UUCP (Mark Stevans) writes:
>I postulate that, each follicle operates on a cycle: extrude hair for A
>days, stop for B days, throw out the hair, wait C days, and repeat.  The
>value of A, B, and C depends on the individual, and the location of the
>follicle (e.g. facial, leg, scalp, etc.).  I believe that none of this
>is affected by what you do to the hair, except maybe by pulling it out
>forcibly "by the roots", which may irritate the follicle into doing
>something special.

On a dare I once bleached my hair and eyebrows.  I got an unexpected
lesson in hair growth.

Eyebrows grow much more quickly than head hair so it was easier to see
what was going on.  Almost immediately there were several eyebrow hairs
that were half brown and half blond.  During the next few weeks
completely brown hairs started growing in -- making a sort of "salt and
pepper" effect -- until eventually all the blond was gone.

This seems to support your theory of grow/wait/fall out.
-- 
			Dave Hitz

UUCP: {decvax,ucbvax,ihnp4}!decwrl!mips!hitz 	DDD: hitz@408-991-0345