<ul><li>Scientists have discovered why hair turns grey, and it has to do with stem cells that lose their ability to maintain hair color as people age.</li><li>The research focused on melanocyte stem cells, which control hair color and are nonfunctional but continually multiplying.</li><li>The study found that certain melanocyte stem cells get stuck as people age and lose their ability to mature, leading to the greying of hair.</li><li>The study's lead investigator suggested that the newfound mechanisms could potentially lead to delaying grey hair by helping stuck cells to move again between developing hair follicle compartments.</li></ul>

Scientists reveal reasons why your hair turns grey

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