OCuSOFT Retaine PM Nighttime Ointment is a physician-recommended, preservative-free overnight eye ointment designed for patients with moderate to severe dry eye who require intensive, sustained overnight protection — delivering all-night lubrication and moisture sealing that no daytime drop can maintain during sleep. The 5g tube provides a generous supply for consistent nightly use.White Petrolatum and Mineral Oil create a thick, occlusive film over the ocular surface and inner eyelid lining that prevents the nocturnal transocular water loss responsible for morning-onset dry eye symptoms, crusting, and discomfort. Unlike some competing nighttime ointments, Retaine PM is completely preservative-free — eliminating the risk of Chlorobutanol or BAK-related surface toxicity in patients who require long-term nightly use. The ointment formulation provides substantially longer-lasting lubrication than any nighttime drop. Apply at bedtime only — ointment will cause blurring of vision. FSA & HSA eligible. For external use only. Available at Beauty Riche — authorized OCuSOFT retailer with same-day shipping.