Oxyal brings prompt and lasting relief in cases of sensation of dry, irritated or tired eyes. It maintains and restores the natural physiological conditions of the eyes' surface by protecting the corneal epithelial cells. Oxyal is a lubricating ophthalmic solution, containing sodium hyaluronate 0.15%, with Protector, in a balanced electrolyte solution, slightly hypotonic with the biodegradable preservative Oxyd. This means while preserved in the bottle, on contact with tears it breaks down into natural salts and oxygen.