Here is a excellent tip submitted by Lisa, I have never seen the name brand of cooktop cleaner in my area but I will definitely look for it based on Lisa recommendation.
I clean houses for a living, and the best way to clean a glass cooktop is to purchase a bottle of Weiman Glass Cooktop Cleaner. Squirt a generous amount onto the cooktop and spread around with a wet paper towel then wipe off with a dry paper towel until the cooktop shines. For cooked on stains, VERY CAREFULLY use a paring knife or other knife with a sharp, straight edge held almost parallel to the surface to scrape the residue from the surface before removing the cleaner with the dry paper towel. You may have to use more cleaner or wipe it away and reapply it to get everything. This works extremely well, and I have had clients ask me how I get their cooktop so clean.
I agree with Lisa, the Weiman cleaner works beautifully. I also use their scrubber sponge designed for the cooktop. I’ve used these products together from the time my cooktop was installed a year ago, and the cooktop still looks pristine.
I just use a brillo pad. Cooktop surfaces don’t scratch easily at all, so unless you’re standing on it and using your foot to do the scrubbing you won’t leave any marks at all. Just requires some elbow grease.
Be aware that there’s a difference between glass and ceramic cooktops. Glass will scratch more easily then ceramic. Never use the YELLOW sponge with GREEN scouring pad, it will surely scratch your glass!! I absolutely hate those yellow and green sponges, worse things ever! Also, if you have some hard water build up, you might find that using a hard water remover cleaner (such as vinegar, bathroom cleaner, etc) would be a tad helpful to remove the build up. Also, as she suggested, a combination of glass top cleaner, a wet towel, and I use a razor (the type you can buy at Home Depot and replace the razor when it dulls). Just be sure that when using your razor that the surface is wet and using it at an angle where you aren’t going to scratch the surface. Also, never use the razor towards you, always away from your body so that your don’t accidentally hurt yourself…. a super clean flat stove top is NOT worth hurting yourself for! LOL Seriously though, I love my flat stove top! I always keep a wet hot dish rag close by when cooking (just in case I spill something). I clean my stove after cooking, and no, I don’t use the special cleaner each time, it’s not necessary each time. Daily cleaning and maintenace is key for a nice looking flat top, don’t get lazy with it, you’ll regret it.