Clayton Shagal Hyaluronic Acid Serum - 30mL Hyaluronic acid supports collagen and elastin which is naturally present throughout the body. Found mainly in the dermis, in the extracellular matrix, hyaluronic acid helps with cell proliferation and maintaining skin firmness, which is its particularly important vocation for sensitive and dehydrated skin. Like collagen and elastin, hyaluronic acid is essential to the structural integrity of the layers of the skin. Collagen is a significant moisturizer that speeds up the renewal of skin cells, while elastin makes skin firm and reduces redness. Hyaluronic acid works in tandem with collagen and elastin to moisturize, nourish and hydrate the skin.