keratin

/ˈkerətɪn/ (bre, ipa) · /ˈkerətɪn/ (ame, ipa) · /ˈker-ə-tən/ (ame, mw)

keratin — noun

  • keratinsingular
  • keratinsplural

1. a hard, fibrous protein that occurs naturally in the body and forms the main str

1.名詞B2
釋義

a hard, fibrous protein that occurs naturally in the body and forms the main structural material of hair, fingernails, and animal parts such as hooves, horns, and feathers, making them tough and resistant to damage

例句

Fatima uses a keratin-rich shampoo to keep her curly hair healthy and strong.

collocation: keratin-rich shampoo / keratin treatment

The keratin in a bird's feathers protects them from rain and wind during flight.

文法句型

keratin + noun

made of keratin

rich in keratin

用法筆記

Usually uncountable. Often placed before a noun to describe a product or substance (keratin treatment, keratin protein). Common in health, beauty, and biology contexts.

常見錯誤

❌I need to buy some keratins for my hair.
✅I need to buy a keratin treatment for my hair.
💡Keratin is generally uncountable; use a specific product name instead of trying to pluralise it.
❌Keratin is the protein that keeps your skin smooth.
✅Keratin is the protein that makes hair and nails strong.
💡Collagen, not keratin, is the protein most directly linked to skin smoothness.