Hycosan Extra Preservative Free Eye Drops 7.5ml Hycosan Extra has been formulated with 0.2% Hyaluronic Acid. It has four times more viscous than Hycosan. This increase in viscosity, which allows a subsequent increase in duration of action, makes Hycosan Extra ideal for more severe cases of Dry Eye. Compatible with all contact lenses. Ingredients Sodium Hyaluronate 2mg/ml
