Dr. Barbara Sturm’s award-winning Hyaluronic Serum is clinically proven to visibly slow skin aging and deliver lasting hydration.* When used regularly, this serum delivers instant & long-lasting hydration, while also reducing the look of wrinkles caused by dehydration. Short- & medium-chain molecules are able to penetrate into the skin and replenish moisture reservoirs long term. Long-chain hyaluronic molecules provide immediate intensive hydration to the surface layers of the skin to give a refreshing effect. 1 oz. Made in Germany.