Refresh Optive® Advanced Lubricant Eye Drops is a lipid-enhanced tear with the low blur and comfort of an aqueous tear. It features a comprehensive, triple-action formulation that works on all three layers of the tear film to reduce tear evaporation, hydrate and lubricate for dry eye symptom relief. More specifically, Refresh Optive Advanced: (1) Contains a lipid that reinforces the lipid layer. (2) Hydrates and increases volume to the aqueous layer. (3)Provides advanced lubrication and protection to the mucin layer.