Low-molecular-weight hyaluronic acid is an inherent component in the human body, and it is a kind of glucuronic acid. It is widely found in placenta, amniotic fluid, lens, articular cartilage, skin dermis and other tissues. In organs, it is distributed in the cytoplasm and intercellular substance, which lubricates and nourishes the cells and organ itself, and provides a microenvironment for cell metabolism. https://www.cd-bioparticles.ne....t/fluorescent-oligom