Product Features · Lubricant eye drops with the Duasorb System (dextran and hydroxypropyl methylcellulose). · Guaranteed to provide relief. · Each vial includes 0.01 fl. oz. Tears Naturale II Tears Naturale® II soothes and moisturizes your dry, sensitive eyes just like your own tears. Tears Naturale® II contains POLYQUAD® preservative, recommended by doctors as being one of the most gentle on the eye. Store brand eye drops and even some national brands are still using a preservative called BAC (benzalkonium chloride), which has been shown to be harsher to the surface of the eye with frequent use.
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