Collagen is a basic extracellular component in the form of connective tissue fiber. It is the most structured protein in the skin and accounts for more than 25% of the dermal proteins. The collagen unit is formed by three peptide chains that form a triple helix structure and is responsible for the resistance and elasticity of the skin. Applied topically, collagen maintains most of its polypeptide chains and has been shown to contribute to slowing skin aging.
The first uses of collagen in surgery and pharmacy began more than 30 years ago, and then thanks to the popularity it became used in cosmetic products for both skin and hair.