Collagen can only be found in animal tissues. The common collagen sources are from cattles, porcine, or marine animals. The AD Collagen solution produced by ACRO Biomedical is high purity bio-active atelocollagen extracted by patented technology from porcine dermis with excellent biocompatibility and excellent quality. The active AD Collagen in ACRODERM skincare products possesses intact triple-helical structure, which can stimulate fibroblast cell proliferation, bind and hold on water molecules and improve skin vitality from the inside out.