The active ingredient of the product, Hyaluronic acid, is a natural moisturizer that affects both external and internal layers of the skin. The true power behind this product lies in the three different variations of hyaluronic acid within the serum. There are long and short chain molecules which harmoniously work together to penetrate deep into the skin, where it is truly able to do its magic. The long chain molecules works on the outermost layer of your skin to bind moisture to the surface, while the short chain molecules are used to help this “moisture magnet” penetrate deep into the skin. The combination of these different hyaluronic acids is what makes this serum so effective and unique.