Windex® Cleaner Original with Ammonia-D®. It provides streak-free shine. America's number one selling glass cleaner. It works great on glass and mirrors. For best results spray and then wipe. Trusted by generations for its famous streak-free shine. Thanks to its patented ingredient, Ammonia-D, Windex Original starts working on dirt and grime even before you wipe. Perfect for cleaning glass and more. Cleans, shines and leaves a refreshing smell.