이 원료는 동물의 털, 양모, 뿔, 손톱, 발톱 혹은 다른 유사 조직에서 유래된 단백질이다.

Keratins. Natural, fibrous proteins occurring in vertebrates. They contain all of the common amino acids and are characterized by high cystine content: Keratin is a protein derived from hair, wool, horn, nails or other similar tissues in animals.

本品は、毛髪、羊毛、角、爪又は他の類似の動物組織から得られるタンパクである。