Blink Contacts Lubricating Eye Drops is a sterile, buffered, isotonic, preserved solution. This aqueous formulation includes purified water, sodium hyaluronate, sodium chloride, potassium chloride, calcium chloride, magnesium chloride and boric acid and is preserved with stabilized oxychloro complex 0.005%. This preparation contains no chlorhexidine, no thimerosal and no other mercury-containing ingredients.