HydraGlyde Moisture Matrix is a proprietary wetting agent in OPTI-FREE PureMoist MPDS that provides comfort and moisture from insertion to removal. How it works:In the lens case, HydraGlyde Moisture Matrix embeds itself on and within the lens surface to provide moist and hydrated lenses throughout the day.HydraGlude Moisture Matrix provides a lubricating cushion of moisture for comfort from lens insertion to removal.OPTI-FREE PureMoist Multi-Purpose Disinfecting Solution, containing HydraGlyde Moisture Matrix, is a proprietary formula that is specially designed.Provides comfort and moisture from insertion to removalReduces lipid deposition and removes protein for clear visionEffective yet gentle formula that kills germs