Posch Care Hyaluronic Acid Serum is a lightweight, water-based, and intensively hydrating formulation that deeply penetrates the skin and locks moisture to the skin cells, imbuing all the dermis layers with rejuvenating moisture. The low molecular size of hyaluronic acid offers your skin multi-depth hydration and visible plumping. Hyaluronic Acid is further supported by Vitamin B3 that magnifies the surface hydration of your skin giving you youthful, powerless and smooth skin.