Hair Go Grey With Age Due To 'Stuck' Stem Cells In Follicles, Study Says

"It is the loss of chameleon-like function in melanocyte stem cells that may be responsible for greying and loss of hair color," researchers say.

from Medical Daily https://www.medicaldaily.com/hair-go-grey-age-due-stuck-stem-cells-follicles-study-says-469469