HYCOSANTM DUAL is the only preservative free eye drop with precise dosing for lipid deficient dry eye. Containing 0.05% Sodium Hyaluronate and 2% Ectoin, it works to stabilize the tear film creating an allergen barrier. This has a dual effect of reducing excessive evaporation and protecting the eye from irritation from allergens to give patients prolonged relief for itchy or burning eyes. Each bottle contains a guaranteed 225 equal drops and remains sterile for 6 months from opening thanks to its unique bottle design.