The folks at Nanofilm have re-invented the science of lens care. Some well-known lens cleaners etch the lens surface when they clean because of harsh pH chemistry. They can damage the lens and make coatings crack, craze and peel. Clarity products are formulated by their staff of research chemists to be pH neutral, so they can't damage lenses. Instead of using harsh chemicals, Clarity Crafted formulations sweep the surface with liposomes, carrying away dirt, body oils, make-up, fingerprints - everything! And they're tested and approved for all lenses and coatings - including Anti-Reflective coatings.