Systane Lubricant Eye Gel is designed to provide long-lasting, nighttime protection from dry eye symptoms while you sleep. Systane offers the thickest gel formulation to coat the eye with a strong layer of dry eye symptom protection. This strong layer of protection provides relief from even the severest symptoms of dry eye. Dry eye symptoms don't have to keep you up at night, the nighttime protection works while you sleep, helping you get a good night's rest. The Systane Family of Products is the #1 Doctor Recommended brand of artificial tears for dry eye symptom relief. Don't let dry eyes ruin your day, Systane provides temporary relief from your symptoms.