Dr. Barbara Sturm's iconic HYALURONIC SERUM - clinically proven to slow skin aging* - in full and miniature sizes, perfect for home and away. *CLINICAL TEST OF 56 DAYS. For Dr. Barbara Sturm, skin aging is associated with biological aging, including the appearance of fine lines and wrinkles, loss of elasticity and vitality, dehydrated skin and dullness. | Dr. Barbara Sturm Hyaluronic Serum Home & Away Duo | Dermstore