Grey Hair: What Causes It, And Can It Be Reversed? A Scientific Analysis 25M and got this much grey hair. I don't want to color them. Any remedy or advice? : r malegrooming Hair turns grey when the cells that give it colour, called pigment cells, slow down or stop making pigment. These pigment makers sit near the base of each hair follicle and supply Glutathione for Hair Growth: Benefits and How to Use? Miduty Graying hair may reflect a natural defense against cancer risk, new study finds EurekAlert! Most people think grey hair is just aging, but your biology sends the signal long before the color changes. Researchers have already mapped out the internal pathways that switch pigment on or