Hylo Tear is a sterile preservative-free solution containing 0.1% sodium hyaluronate, a citrate buffer, sorbitol and water. Hlyo Tear is a lubricating eye drop for treating all symptoms of dry eye sensation. Hylo Tear Eye Drops are protective eye drops that effectively relieve dry eyes that are the result of long-term strains throughout the day such as computer work or wearing contact lenses. They can even be used to comfort eyes after surgery and they will relieve all dry eye symptoms, leaving your eyes feeling hydrated and less irritated. Hylo Tear contains 0. 1% , a citrate buffer, sorbitol and water.