The 3M Glass Cleaner^s Streak-Free Formula removes all Stains, Filmy Residues, Grime and Fingerprints Ready to Use and Safe on all Glass, Metal and Plastic Parts as Superior Solvents ensure Quicker Removal of Contaminants with Minimal Effort It is a Zero Ammonia Formulation which has No Unpleasant Smell and is Safe for the User as well as the Environment Spreads Easily on the Glass to give Superior Results without leaving any residues behind. How to Use: Make sure the glass is cool and in the shade when you apply the cleaner. Spray glass cleaner uniformly on glass surface. Wipe clean with new 3M Microfiber Cloth after 3s to 1 min. Try it on the inside and the outside surface for maximum shine!