Product review (1 stars): I would give it 0 starts if I could figure out how to do it.
This "protectant" left streaks, smears, haze, ect. that I could not polish or buff out no matter how hard I tried. I also purchased Cerama Bryte Ceramic Cooktop Cleaner (28 oz), Scraper and 5 Cleaning Pads, which I highly recommend. I have also used it on my pellet stove glass door and wood stove glass door, and it did an excellent job. The Whirlpool stuff however is junk!