Our Inner Hair Nutrition bites contain Bovine Collagen. Collagen is a naturally occurring protein, found in abundance in our bodies. It plays a role in assisting the strength and hydration of our hair, skin, nails, muscles, tendons, ligaments, bones, teeth, eyes etc. Bovine Collagen helps to supply your hair follicle with vital amino acids which the body can then use to create keratin; the protein which makes up about 70-80% of your hair shaft.