Hyaluronic Acid is a molecule which is one of the chief components of connective tissue, forming a gelatinous matrix that surrounds cells. It serves especially as a structural element and lubricant.
HA is a substance found naturally in our skin that holds water and helps keep it hydrated and plump. Baby faces are round and smooth because at a young age we have the highest concentration of Hyaluronic Acid. However, because it degrades with age, adults begin to lose facial volume and develop wrinkles.