Helps retain moisture on the contact lens surface so your lenses feel fresh and moist throughout the day when contact lenses are soaked in opti free replenish the surface of the lens is reconditioned every night by adsorbing a proprietary reconditioning system this allows a thin layer of moisture from your natural tears to be maintained on the lens surface throughout the day use of opti free replenish has been shown to increase comfort for wearers of the most common soft contact lens materia