The PCA Skin Hyaluronic Acid Boosting Serum is specially formulated to provide hydration to multiple layers of the skin. On the surface of the skin it provides intense hydration and smoothing. In deeper skin layers it provides hydration as well as reduction of fine lines thanks to the hydrolized hyaluronic acid contained within the serum. The PCA Skin Hyaluronic Acid Boosting Serum also contains the proprietary blend HA-Pro Complex. This stimulates the skin to produce more of its own hyaluronic acid. Thanks to this, the skin can experience long term hydration and anti-ageing.