Pure L-Proline Powder a Collagen Component (1000 Grams (2.2 lb))

What the brand says

L-Proline is one of the main amino acids of collagen. Collagen is a major structural component of cells. Collagen production decreases significantly with age. L-Proline, L-Lysine and Ascorbic acid all are essential for the formation of collagen and cartilage.