Hydration Boost Duo the ultimate power couple for achieving deeply moisturized and youthful-looking skin. This incredible combo includes Hyaluronic Acid Facial Serum and our Polyglutamic Acid Facial Serum. This advanced serum boasts a powerful moisture-retaining capability providing intense hydration that lasts. It forms a protective barrier on the skin preventing moisture loss and promoting a dewy radiant glow. Say goodbye to dry dull skin and hello to a revitalized luminous complexion.