Hyaluronic acid (HA) is a gel-like water holding molecule that is the space filler and cushioning agent in all mammals. HA cushions joints, nerves, hydrates skin and hair, and fills the eye.

HA improves skin hydration, stimulates production of collagen in skin, works as an antioxidant and free radical scavenger, maintains skin elasticity, cushions joints and nerve tissues, has an antibacterial and anti-inflammatory activity and maintains the fluid in the eye tissues, which may help to protect against numerous possible eye concerns.