...a chemical enticement encourages the skin to fill in hair-growing structures.*
---RJ Davenport
Dr. Davenport goes on to explain why hair gets increasingly pathetic with age. People are born with all the hair follicles they'll ever have. Over time, hair follicle performance 'falters,' and these hair-replenishing structures spend more time resting than growing. Follicles, along with every thing else that's fresh and young in humans, shrink with age.
Is there good news? A molecule called beta-catenin can induce new hair follicles, at least in mice. Dr. Davenport feels that this research may hold hope that hair can be saved as we age.
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*R. J. Davenport, Hair Trigger. Sci. Aging Knowl. Environ. 2005 (27), nf54 (2005)
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