灰头发头发为什么会变成灰色?灰色(或白色)其实才是头发的“基色”。每一根头发的毛囊根部都有许多色素细胞,在我们年轻的时候它们会不断制造出色素,使我们的头发具有那种天然颜色。但是,随着年龄的增长,到了中年之后,就会有越来越多的色素细胞死去,头发一根又一根地失去颜色。结果,一个人的头发就会开始逐渐显现为灰色。 Gray hair Why gray hair? Gray (or white) is actually the hair “color ”. Every hair follicle root has a lot of pigment cells, when we were young, they will continue to make the pigment, so that our hair with that natural color. However, with age, more and more pigmented cells will die and hair will lose their color one after another after middle age. As a result, one’s hair begins to appear gray gradually.