Systane Ultra UD is a preservative-free lubricant eye drop solution that provides extended protection and fast symptom relief for dry eyes. Each package contains 30 single-use vials of 0.7mL, making it convenient and hygienic for daily use. This product contains Polyethylene Glycol 400 0.4% and Propylene Glycol 0.3% as active ingredients. The UD (Unit Dose) format means each vial is sterile and preservative-free, making it suitable for sensitive eyes. The single-use vials should be discarded after one use. Store at room temperature and keep away from direct light. If irritation persists or vision changes occur, discontinue use and consult an eye care professional.