Using cutting-edge technology that is environmentally friendly, enzyme-based PUROSOL is the first product of its kind to clean at the molecular level - neutralizing the bonds dust, dirt, oil, and grime use to adhere to glass or plastic lens surfaces. Unlike many other cleaning solvents, PUROSOL is completely safe and will not harm your lenses. This unique solution lasts longer than other solvents and is designed specifically for the demands of high-end multi-coated lenses.