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一天掉多少头发正常

更新时间: 2020-11-07 00:00:00     

1、正常人每天会掉落约70根~100根头发。

2、头部大约平均有10万个毛囊,毛发从毛囊深部的毛球不断向外生长,理想状态下每根毛发可生长2—7年,然后自然脱落,毛囊休止一段时间后再生新发。这一过程称为毛发的生长周期。头部的每个毛囊从婴儿期到出生后的几十年间,约经历20个生长周期。

关键词: 多少 头发 正常

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