Brand New in box. 3 ml traveling size. Multiple available. Made in Germany. The HYALURONIC SERUM is the most fundamental creation in Dr. Barbara Sturm’s skincare line. Packed with an optimal concentration of low and high weighted Hyaluronic Molecules, it provides instant hydration at the surface and deeper skin layers. The low molecular weight Hyaluronic Acid penetrates deeper skin layers, leaving skin feeling firmer, refreshed and visibly more radiant for the long term. High weight Hyaluronic Molecules provide immediate intensive hydration to the surface layers of the skin.