Only invisible glass has been tested and proven 100% residue-free. Many glass cleaning products contain soaps, scents, dyes and other additives that leave residues on glass. Residues form streaks and attract grime to the surface. This build up may damage tints and finishes. Invisible Glass was formulated to dissolve and remove the unique film that builds up on the interior windshield from plasticizer film, smoke haze and other environmental debris. On exterior glass, Invisible Glass quickly breaks down bug splats, bird droppings, salt spray and road grime. Plus Invisible Glass is ammonia-free and safe to use on tinted windows.