T.F.
I have a white glass top stove by Kitchen Aid that I love. It is 3 yrs old and still looks brand new.
I clean it EVERY time I use it. I do use the CeramaBryte from Home Depot but I also use the little yellow scrubbies that are in the same location as the lotion.
I NEVER use razor blades and they are sold in a kit with the cleaners but no way would I do that. It is too easy to clean it with the lotion and scrubbies. The trick is you clean it EVERY time you use it. Don't wait around and just do it every other day, every week or something like that.
The yellow scrubbies are wonderful. They will get everything off, leave no scratches and it looks brand new.
I have used these scrubbies on my white corning ware that has hard to remove baked on stains and even in the shower on soap scum. I keep extra packs of them on hand... LOVE them and they are less that $5