SYSTANE NIGHTTIME Eye Ointment is designed to keep your eyes lubricated and comfortable while you sleep. It forms a smooth, protective layer for the eyes that provides long-lasting dry eye symptom relief at night. It is also Preservative-Free. Ingredients: Polyethylene Glycol 400 0.4%; Propylene Glycol 0.3% Available in 3.5 g tubes. Active IngredientsPurpose Mineral Oil 3%Lubricant White Petrolatum 94%Lubricant Uses For use as a lubricant to prevent further irritation or to relieve dryness of the eye.