Systane Hydration UD is a preservative-free lubricant eye drop that comes in 30 single-use vials of 0.7ml each. Containing hyaluronate, these sterile drops provide prolonged, long-lasting relief from dry eyes through advanced hydration technology. The unit dose (UD) vials are preservative-free, making them ideal for sensitive eyes. Each vial contains a precise 0.7ml dose and should be discarded after single use. The formula contains hyaluronate for enhanced moisture retention and advanced hydration. Store at room temperature and keep away from direct light. For external use only. If irritation persists or vision changes occur, discontinue use and consult a healthcare professional. Do not use if the solution appears cloudy or discolored.