sebum

IPA/ˈsiːbəm/
IPA/ˈsiːbəm/

sebum — noun

1. the natural oily material that human skin releases, keeping the skin surface sof

1.名詞C2
釋義

the natural oily material that human skin releases, keeping the skin surface soft and stopping the hair from becoming dry or dull

例句

Mei's doctor told her that sebum helps protect the skin during cold, dry weather.

sebum helps protect — natural function of sebum

After Kenji started using a shampoo to control sebum, his hair felt less greasy.

controls sebum — verb collocation for managing oil levels

同義詞
  • 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.

常見錯誤

❌My skin produces too many sebums.
✅My skin produces too much sebum.
💡'Sebum' is an uncountable noun and has no plural form.
❌The doctor said I have a sebum on my nose.
✅The doctor said I have excess sebum on my nose.
💡Do not use 'a/an' before an uncountable noun.