Bovine collagen is a naturally occurring protein that is found in the skin, bones, and muscles of cows. This collagen is so similar to human collagen that many people in the beauty industry have embraced its use as a cost-effective way to treat wrinkles and fine lines.ollagen is a protein in the human body that makes hair shiny. While a collagen deficiency may cause premature aging of the skin, too much collagen may cause the skin to harden. Collagen injections can only be administered by a surgeon.