These outer-layer skin cells, which are called corneocytes, are actually already dead.
这些称为角质细胞的外层皮肤细胞实际上已经死亡。
英语百科
Corneocyte
Corneocytes are terminally differentiated keratinocytes and compose most if not all of the stratum corneum, the outermost part of the epidermis. They are regularly replaced through desquamation and renewal from lower epidermal layers, making them an essential part of the skin barrier property.