Naked Science Forum

Life Sciences => Physiology & Medicine => Topic started by: Anna Hoad on 09/03/2010 15:30:02

Title: How can hair change colour along its length?
Post by: Anna Hoad on 09/03/2010 15:30:02

Anna Hoad asked the Naked Scientists:
   
Dear Chris

I searched through your wonderful website but couldn't find an answer to this:

My hair is naturally black, undyed and long enough for me to observe changes in the colour.

Some of my hairs are colourless for several inches at the ends for but appear to have regained their black colour towards the root.

How can this happen?

Anna Hoad

What do you think?

Title: How can hair change colour along its length?
Post by: RD on 09/03/2010 18:10:25

Hair growth and pigmentation is cyclic, not continuous ...

http://www.thenakedscientists.com/forum/index.php?topic=15392.msg181158#msg181158

http://www.ncbi.nlm.nih.gov/pubmed/15036274

Title: How can hair change colour along its length?
Post by: thedoc on 11/05/2010 17:40:06

Go to the podcast page. (http://www.thenakedscientists.com/HTML/podcasts/show/2010.05.09/)
or [chapter podcast=2579 track=10.05.09/Naked_Scientists_Show_10.05.09_6232.mp3](https://www.thenakedscientists.com/forum/proxy.php?request=http%3A%2F%2Fwww.thenakedscientists.com%2FHTML%2Ftypo3conf%2Fext%2Fnaksci_podcast%2Fgnome-settings-sound.gif&hash=f2b0d108dc173aeaa367f8db2e2171bd) Listen to the Answer Now[/chapter] or [download as MP3] (http://nakeddiscovery.com/downloads/split_individual/10.05.09/Naked_Scientists_Show_10.05.09_6232.mp3)