Nature’s Field BeautySure Collagen Peptides are formulated to help counteract age-related collagen loss. Peptides are derived from the hides of grass-fed bovine to ensure you are getting the best quality possible. Collagen is a protein that serves as one of the main building blocks for our skin, hair, muscles and bones. Collagen is what helps to keep our skin from sagging, giving you a youthful look as you age, which may lead to many visible signs of aging.