Blink Intensive Tears Protective Eye Drops are formulated to soothe and protect dry feeling eyes. It contains a lubricating demulcent and a viscosity enhancer for a long lasting effect. They include 0.20% sodium hyaluronate and a viscosity enhancer, resulting in a long-lasting impact. This product has no preservatives, making it safe for sensitive eyes. Blink intensive tears eye drops come in 20 single-dose vials that are convenient, clean, and ideal for travel. A vial can be kept anywhere you may need it, such as at work, in the car, in your backpack, or in your purse. These eye drops are designed to swiftly and efficiently relieve and refresh dry eyes.