collagen

1. N-UNCOUNT Collagen is a protein that is found in the bodies of people and animals. It is often used as an ingredient in cosmetics or is injected into the face in cosmetic surgery, in order to make the skin look younger. (美容用的)胶原蛋白

The collagen that is included in face creams comes from animal skin. 面霜中包含的胶原蛋白来自于动物皮肤。

...collagen injections. ...胶原蛋白注射物。