Hylo Dual Preservative Free Eye Drops (7.5ml). There are different reasons why the protective film of fluid over the cornea can rupture and quickly dry up. One cause is insufficient production of lacrimal fluid.. Another reason is an incorrect physiological composition of the tears, for example if they contain too little oil. Irritation of the surface of the eye occurs as well as an itchy and burning feeling in the eye.. Because of the lack of lubrication, foreign bodies and irritants from the environment can more easily get into the cornea. This can result in irritation of the surface of the eye and inflammation. Contact with substances such as pollen or animal hair can set off allergic reactions in some people’s eyes. These are also accompanied by symptoms of inflammation, redness and watery eyes.. The tear film of dry eyes with concurrent symptoms of inflammation and allergies should therefore be stabilized. HYLO DUAL® eye drops are ideal for this. Alongside moisturising hyaluronan, they also contain ectoine, which gives the tear film particular stability, so that it can work as a natural protective barrier.. Ectoine lubricates, protects and fights against inflammation.. HYLO DUAL® eye drops derive their special effectiveness from the additive ectoine. This has excellent water-binding properties and so forms a particularly stable film of fluid on the surface of the eye.. In addition, ectoine also has a stabilising effect on the oily layer of the tear film. In that way, the eyes are better protected against fluid evaporation and drying out. Inflammatory symptoms are thus alleviated by ectoine and the stressed tissue is soothed.