TEARS ENCORE® Dioptic Polysorbate 80 Eye Lubricant   Availability And Storage: Each mL of sterile, aqueous solution contains: 0.4% polysorbate 80. Nonmedicinal ingredients: disodium edetate, purified water, retinyl palmitate and sodium chloride. If solution changes color or becomes cloudy do not use. Plastic dropper bottles of 10 mL. Discard the bottle 30 days after opening.