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. Provides extra strength moisturizing relief. Our thickest gel formula for sensitive eyes. These drops come in preservative-free single-use vials and are safe to use as often as needed, so your eyes can feel good - anytime, anywhere. Sterile.