L-Proline
L-Proline is an amino acid, which is one of the building blocks of proteins. L-Proline plays a crucial role in the synthesis of collagen, a protein that provides structural support to various tissues in the body, including the skin, joints, and blood vessels. It is also involved in the production of cartilage, tendons, and connective tissues. Additionally, L-Proline is important for the proper functioning of the immune system and the maintenance of healthy skin.