The COSRX Hyaluronic Acid Serum is an ultra-nourishing facial serum that works to hydrate and retain moisture in the skin. Using a combination of Hyaluronic Acid, Amino Acids and Ceramides to reduce skin dryness and protect the skin barrier. What are the key features and benefits of the COSRX Hyaluronic Acid Serum? * Hydrating facial serum * Strengthens the skin’s barrier * Retains skin moisture * Plumps the appearance of skin * Provides a hydrating glow to the complexion * Reduces dryness and dehydration * Locks in moisture and protects the skin barrier What are the key ingredients of the COSRX Hyaluronic Acid Serum? Hyaluronic Acid Hyaluronic acid is a humectant that draws in and maintains moisture.