首先很高兴悟空问答邀请我回答这个问题。头发的生长和毛囊是分不开的,头发生长也分为三个周期,这也是称之为人体的自我调节吧。还有我个人觉得头发粗大的长得比较快,细软的头发生长就比较慢。
1.生长周期.在生长期,毛囊功能活跃,毛球底部的细胞分裂旺盛,分生出的细胞持续不断地向上移位,当发囊中的软囊角质变化为硬蛋白质,于是头发被推出皮肤外,成为肉眼可见的头发,在这期间头发是长得最快的。2.退行期,也就是头发长到了6厘米左右,那时头发生长就变得缓慢了。3.休止期,也就是头发的长度到30厘米左右,头发的生长就会变得更慢了,那时头发也很容易脱落。
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