Optics Surface Treatment is a specially formulated spray that will not damage optics with multi-layer coatings. This eyeglass cleaner will keep lens surfaces clean from fingerprints, smudges, and dirt. Lightly wipe lenses with a soft cloth to remove any surface grit which may scratch lenses during cleaning. Then spray both sides of each lens and wipe with a dry, soft, clean cloth until clear. When lenses get dirty, simply wipe off with a water-dampened cloth. Recommended for glass, plastic and polycarbonate lenses. Non-aerosol spray contains no ozone depleting chemicals.