Skinceuticals HA Intensifier Multi-Glycan Serum 30ml is a multifunctional corrective serum that increases the skin's hyaluronic acid levels. This exclusive formulation contains a high concentration of pure hyaluronic acid, 12% proxylane™ and a new post-biotic ferment to increase glycosaminoglycans such as HA, preserving their levels in the upper layers of the skin.