To open, twist and pull tab to remove. Instill 1 to 2 drops in the affected eye(s) as needed and discard container. If used for post-operative (e.g. Lasik) dryness and discomfort, follow your eye doctor's instructions.Inactive Ingredients:Calcium Chloride; Magnesium Chloride; Potassium Chloride; Purified Water; Sodium Chloride; Sodium Lactate; May Also Contain:: Hydrochloric Acid; Sodium HydroxideUses: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. The easy answer for dry eye relief. Instantly moisturizes and relieves dry, irritated eyes with a fast-acting, long-lasting formula for sensitive eyes that has many of the same healthy qualities as your own natural tears. Demonstrated to improve dry eye when used after Lasik. Comes in a convenient single-use vials (50 - 0.1 oz containers) Is safe to use as often as needed Your eyes can feel good anytime, anywhere.For external use only. To avoid contamination, do not touch tip of container to any surface. Do not reuse. Once opened, discard. Do not touch unit-dose tip to eye. .Do not use if solution changes color or becomes cloudy. Stop use and ask a doctor if you experience eye pain, changes in vision, continued redness or irritation of the eye, or if the condition worsens or persists for more than 72 hours. Keep out of reach of children. If swallowed, get medical help or contact a Poison Control Center right away.