New multipurpose disinfecting solution OPTI-FREE PureMoist designed to keep lenses hydrated for 16 hours! Only the disinfection solution Multipurpose OPTI-FREE ® PureMoist ® has the revolutionary system HydraGlyde ® Moisture Matrix, which is incorporated onto and into the surface of the lens to provide hydration throughout the day. Removes daily lipids and proteins for clear vision and is effective if and gentle formulation that kills germs.