Anua Birch 70 Moisture Boosting Serum is a deeply hydrating formula with 70% birch sap that soothes sensitive skin and enhances moisture retention through ingredients like panthenol and various forms of hyaluronic acid. This serum also strengthens the skin barrier while providing essential care for balanced oil and water levels, thanks to its blend of natural extracts such as cucumber, evening primrose, and malachite.