Collagen Collagen is a strengthening protein fibre found throughout the body, in bones, teeth, artery walls, cartilage, ligaments, tendons – and skin. In the skin collagen determine plumpness and structure, effectively keeping gravity at bay. Closely associated with skin thickness, another typical marker of youth, collagen levels begin to decline in our mid-twenties with the … Continue reading What is Collagen? – Santi London