Preservative free. Ideal for Eye Wash, Wound Cleansing, Topical Irrigation, dispensing gentle drops. KNOXZY Sterile Eye Pods wash irritants such as pollen, air pollution and dust out of your eyes in gentle and effective way. KNOXZY pods are ideal as a First Aid precaution whether this is for your family and friends at home or within your office and workplace, simply twist off the gap and pour into eye for optimum cleaning. KNOXZY Sterile Eye Wash Pods for the cleaning and irrigation of your eyes, which can be used to refresh your eyes or for any non emergency situation like the removal of foreign dust and dirt.