corneum
US
・UK
A1 初級
n.名詞角質層
影片字幕
【生活百科】為什麼天氣冷，嘴唇就容易乾裂破皮？（中英字幕）(Why Do Your Lips Get Chapped?)
- like the rest of your skin, the outermost layer of the epidermis - the stratum corneum
不過在嘴唇表皮最外面那一層角質層
- While it is made up of the epidermis and dermis like the rest of your skin, the outermost layer of the epidermis, the stratum corneum, is much thinner on your lips, so thin that it allows more visibility into our blood vessels, giving our lips that reddish color.
所以無法提供水分，嘴唇上也沒有毛髮能夠隔離陽光
