HYLO®DUAL eye drops contain Sodium Hyaluronate and Ectoine. Ectoine is a natural substance formed by microorganisms to protect themselves from extreme environments. Ectoine has a strong water-binding capacity. The water  surrounding Ectoine forms a barrier which protects cell membranes from coming into contact with allergenic substances. Ectoine also has a stabilizing effect on the lipid layer of the tear film causing it to spread evenly over the eye surface and protecting against the evaporation of tears. Sodium Hyaluronate and Ectoine provide intensive long-lasting lubrication of the ocular surface and protect against the evaporation of tears to relieve itching and burning caused by inflammation and allergies.