sebum
sebum — 名詞
1. the natural oily material that human skin releases, keeping the skin surface sof
皮脂
皮膚分泌的油脂，保護皮膚與頭髮
the natural oily material that human skin releases, keeping the skin surface soft and stopping the hair from becoming dry or dull
Mei's doctor told her that sebum helps protect the skin during cold, dry weather.
Mei 的醫生告訴她，皮脂能在寒冷乾燥的天氣裡保護皮膚。
sebum helps protect — natural function of sebum
After Kenji started using a shampoo to control sebum, his hair felt less greasy.
Kenji 改用能控制皮脂的洗髮精後，頭髮變得比較不油了。
controls sebum — verb collocation for managing oil levels
A dermatologist told Diego that washing too often removes the natural sebum his skin needs.
皮膚科醫生跟 Diego 說，太頻繁洗臉會洗掉皮膚需要的天然皮脂。
Fatima read in a health magazine that sebum keeps the skin from cracking in winter.
Fatima 在一本健康雜誌上讀到，皮脂能防止冬天皮膚乾裂。
To balance sebum without drying her skin, Elena uses a gentle cleanser each morning.
為了不讓皮膚變乾，Elena 每天早上用溫和的洗面乳來平衡皮脂。
- oil
everyday, less technical term for the skin's natural grease
- sebaceous secretion
more formal medical term; describes the same substance in clinical writing
文法句型
sebum + verb (produced, secreted, removed)
excess / natural sebum
用法筆記
Uncountable noun — do not use a plural form ('sebums'). The word is common in skincare, dermatology, and biology contexts. 'Excess sebum' and 'sebum production' are frequent collocations.