Windex is noted for having a wonderful 'streak-free shine'
and 'cuts through greasy soil easily'. I don't know what soil has to do with glass and why soil would be greasy but Helen Johnson (company name) promptly proclaims this on the inside of the front sticker. You have to scrape the sticker off or view it from the other side of the bottle through the delicious looking blue liquid. Interestingly enough Windex is useful for cleaning chrome, and removing hard core stains from your computers plastic parts, particulary older beige Macintosh systems. It works okay on other plastics, but for some reason it provides a cleaning utopia for Mac users with those old beige Macs. In Canada it's imported by S.C. Johnson and Son LTD.