HYLO™ eye drops contain the sodium salt of hyaluronic acid, a substance found naturally in the eye and other parts of the body. Due to its special physical property, HYLO™ forms a regular, stable, long lasting lubricating film on the eye surface. This film is not easily rinsed off and does not cause blurred vision. HYLO™ provides long-lasting moisture to the surface of the eye to efficaciously support the natural process of healing.