Thea’s most advanced preservative-free combination of Sodium Hyaluronate and Trehalose for lubrication, hydration and protection of all dry eyes – in a hypotonic formulation that can be used with contact lenses. Trehalose protects the epithelial cells on the ocular surface, improving their resistance to the daily stresses of dry environments and tear film changes in a dry eye. Sodium Hyaluronate adds moisture by holding water to hydrate and lubricate the surface of the eye. This combination makes it the ideal choice for all dry eye sufferers, whatever the cause. The drops can be applied as often as necessary throughout the day and are also suitable for contact lens wearers to apply either before or during wear.