이 원료는 동물의 연골조직 및 다른 연결조직에서 발견되는 단백질이다.

Collagens. A fibrous protein comprising one third of the total protein in mammalian organisms. It is a polypeptide containing three peptide chains and rich in proline and hydroxyproline: Collagen is a protein found in cartilage and other connective tissues; it is listed in the PETA's Caring Consumer guide as an animal-sourced ingredient.

本品は、動物の軟骨と他の結合組織から得られるたん白である。