Preservative-Free. With Hydrocell. Doctor #1 Recommended. Moisture-Rich Relief. Protect Tears from Evaporating. 30 Vials - 1 fl oz (0.4 ml) each Sterile. For Sensitive Eyes. Give your dry, burning, or irritated eyes Refresh Optive Mega-3 Lubricant Eye Drops - a preservative-free formula that provides fast-acting, lasting relief. These artificial tears deliver advanced hydration that nourishes the eyes surface and helps protect your natural tears from evaporating. Specially crafted with natural plant-based oils, antioxidants (inactive ingredients), and moisture-locking technology, this triple-action formula works to soothe symptoms and prevent further irritation. Safe to use as often as needed. Just apply 1 to 2 drops in the affected eye(s). Trust your dry eyes to Refresh - the #1 doctor recommended artificial tears and preservative-free leader with more than 35 years of experience.