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. It alleviates dryness and restores the skin’s moisture balance. NMF (Amino Acid Complex) This complex aims to improve the skin barrier, protecting against dryness and dehydration. Ceramide Ceramides aid with reducing skin sensitivity by protecting it against external aggressors.