For the temporary relief of burning, irritation, and discomfort due to dryness of the eye or exposure to wind or sun. May be used as a protectant against further irritation. Advanced formula adapts to your dry eye needs for immediate comfort and longer-lasting relief. Restores your tear film each time you blink. Clinically shown to improve tear film stability. Gentle OcuPure preservative disappears in your eye. Product Benefits.