How does Hair Turn Gray?

hair diagram     gray    white
How does hair get its color?        How does hair go gray?           How does hair go white? 

Click on each image for a larger diagram and more information!
Reference Material:
Graying: gerontobiology of the hair follicle pigmentary unit
D.J. Tobin, R. Paus
Department of Biomedical Sciences, University of Bradford, Bradford, West Yorkshire BD7 1DP, UK
Department of Dermatology, University Hospital Eppendorf, Hamburg, Germany
Experimental Gerontology 36 (2001) 29-54

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