Other Information: store at 46 degrees -80 degrees F (8 degrees -27 degrees C). Misc: Preservative free. Dry eye therapy. For nighttime protection of dry eyes. Systane Nighttime Lubricant Eye Ointment is a safe and effective formulation with no preservatives. This unpreserved ointment, when applied to the eyes, forms a smooth, comfortable protective film, especially useful for nighttime protection and lubrication of dry eyes. Please read this carton carefully and keep for future reference. Questions? In the U.S., call 1-800-757-995 or visit www.systane.com. Made in Belium.