Approximately 25 to 30 percent of all protein in the body is collagen, the structural matrix found in skin and other connective tissues. Of the more than 28 different types of collagen identified, type I is the most abundant and is found in the dermis, tendons, ligaments, and bone. Collagen is also present in the skin and bones of pigs and cattle, and the skin, bones, and scales of fish, which all have bioactivity in the skin of humans making it safe for human consumption.
Evaluating the Clinical Applications of Collagen
Youthful Skin, Healthy Aging, and More