What is the layer of hard keratin that coats the hair is termed the?

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1242883

2026-05-17 10:15

头发外层的硬角质层被称为角质层（cuticle）。角质层是由扁平、重叠的细胞组成的，它保护头发的内部结构，防止水分流失和外部损伤。

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