A glass-ceramic cooktop, including an induction one, should never be cleaned with abrasive powders, metal sponges or oven cleaners: they leave scratches and dull patches for good. The other half of the damage comes from habits: sliding pots across the glass, using cookware with a rough bottom, and storing things right on the glass.
- A scratch on glass-ceramic cannot be washed off, so it is best to keep anything that scratches (powders, metal sponges, melamine pressed hard) away from the cooktop.
- Oven cleaners are too alkaline for the glass, the printed pattern and the aluminum frame.
- Cleaner that is not rinsed off burns on in spots the next time the cooktop heats up, so after washing, wipe the cooktop with a clean damp cloth and dry it.
- Lift pots instead of sliding them: that way the glass does not get scratches or gray metal streaks.
- A cooktop is not a shelf: a dropped jar can leave a chip, and a forgotten bag will melt if the cooktop is switched on by accident.
Why glass-ceramic does not forgive mistakes
Glass-ceramic withstands high temperatures and heavy cookware, but its glossy surface is easy to spoil. A deep scratch or chip cannot be washed off and cannot always be smoothed out by polishing, because the glass itself is damaged. The damage usually builds up unnoticed: each cleaning with powder takes off a little more gloss, and after six months the cooktop looks dull even though it was washed regularly. Induction cooktops are usually covered with the same glass-ceramic (less often with tempered glass), so the same rules apply to them.
Below are eight typical mistakes. The first five are about washing, the other three are about cooking and everyday habits. We covered the full right way to clean in the article how to clean a glass-ceramic stove, and here we focus on what not to do.
Mistakes with products and tools
1. Abrasive powders and a melamine sponge pressed hard
Cleaning powder is basically fine sand in a box. It removes burnt-on residue together with the gloss: first a dull haze appears, then the burner markings wear off. A melamine sponge works like very fine sandpaper: a light touch can remove a single spot, but if you scrub the whole surface with force, dull patches are unavoidable.
2. Metal sponges, knives and the rough side of a sponge
A metal scourer, a knife and the hard abrasive layer of an ordinary kitchen sponge leave a web of fine scratches. Grease gets packed into them, and the cooktop looks dirty even right after washing. Burnt-on residue should only be removed with a glass-ceramic scraper held at an angle of 30–45°, on a cooled surface.
3. Oven and grill cleaners
Oven gels are a strong alkali designed for enamel. On a cooktop they can damage the printed pattern and leave dark spots on the aluminum frame, and any residue that is not fully rinsed off burns on when heated. For glass there are creams and gels labeled "for glass-ceramic", and they remove grease just as well.
Mistakes when washing
4. Detergent that is not rinsed off
A drop of concentrate left on the glass burns on the next time it heats up, leaving a pale or "rainbow" spot that even a cream can hardly remove afterward. Dilute dish soap with water or put a few drops on a damp cloth, and after washing wipe the cooktop with a clean damp microfiber and dry it.
5. A cold wet cloth on a hot surface
Glass-ceramic itself is designed for temperature swings, but you still should not wash a hot cooktop. A synthetic cloth can melt and stick to the glass, and melted plastic leaves the same pits as sugar. Cleaner on hot glass bakes into streaks instantly, and steam burns your hands. Wait until the "H" residual heat indicator goes out. The only exception is sugar and plastic: push them aside right away with a scraper, without water.
Mistakes in cooking and daily use
6. Dragging pots across the glass
Sliding a heavy pot from one burner to another is a habit, but there are almost always crumbs, salt or grains of sand under the bottom. On windy days in Aktau, fine dust and sand settle in the kitchen even with the windows closed, and every grain under a pot acts like a cutting tool. Cookware with an aluminum or copper bottom also leaves gray metal streaks. Lift cookware and set it down where you need it.
7. Cookware with a rough or dirty bottom
Cast iron with a rough bottom, ceramics with an unglazed rim and pots with chipped enamel scratch the glass at the slightest slide. Burnt-on grease on the bottom of a pan transfers to the cooktop and bakes on in rings. Before cooking, run your palm over the bottom: it should be smooth, clean and dry. For induction, the bottom must also attract a magnet, otherwise the zone simply will not turn on.
8. Using the cooktop as a countertop
It is handy to cut bread on a switched-off cooktop, set bags on it and dry a towel. But a cutting board drags grains of sand across the glass, a dropped jar or lid can leave a chip, especially near the edge, and a bag or plastic container will melt if someone accidentally touches the sensor. On an induction cooktop, a forgotten knife, spoon or lid will heat up if the zone switches on. Turn on the child lock and keep the surface empty.
Don't → Do: a kitchen cheat sheet
| Don't | Do |
|---|---|
| Cleaning powder, melamine pressed hard | Glass-ceramic cream or gel |
| Metal sponge, knife, the rough side of a sponge | Glass-ceramic scraper at an angle of 30–45°, soft microfiber |
| Oven and grill cleaner | A product labeled "for glass-ceramic" |
| Leaving cleaner on the glass | Wipe off with a clean damp cloth and dry |
| Cleaning a hot cooktop with a wet cloth | Wait until the "H" indicator goes out; for sugar and plastic, use a scraper right away |
| Sliding pots across the glass | Lifting and setting them down |
| Cookware with a rough, dirty or wet bottom | A smooth, clean, dry bottom that matches the burner size |
| Storing things and cutting food on the cooktop | Keep the surface empty, turn on the lock |
What to keep at hand for safe care
So you are not searching in a hurry for something to rub off a stain, put together a small kit and keep it next to the stove:
- two microfiber cloths: a damp one for washing and a dry one for polishing;
- a glass-ceramic scraper with spare blades;
- glass-ceramic cream or gel: for burnt-on residue and metal marks;
- polish with silicone: once every 1–2 weeks for a protective film;
- mild dish soap: diluted, for daily washing;
- vinegar or citric acid: against white spots from hard water, which appear especially fast in Mangystau.
What to do if the cooktop is already damaged
First work out what you are dealing with. Gray streaks, "rainbow" marks, white spots and thick burnt-on residue sit on the surface, and they come off with proper cleaning and polishing. Deep scratches, chips, cracks and pits are damage to the glass: polishing will make the cooktop cleaner and smoother to look at, but it will not remove such defects. A simple test is to run a fingernail over it: if it catches, it is a scratch.
If the cooktop has gone dull from burnt-on residue and streaks, cooktop polishing will help: at Cleaning Lab a domino panel with 2 burners is from 5,000 ₸, a glass-ceramic or induction cooktop with 4 burners is from 7,000 ₸, and a wide 5-burner cooktop is from 9,000 ₸. If the whole kitchen is heavily soiled, with grease on the cabinet fronts, backsplash and appliances, it is easier to book a full kitchen cleaning: from 15,000 ₸ for a kitchen up to 8 m². And we clean the stove, oven and range hood for free as part of a deep cleaning and a scheduled apartment cleaning.
If a crack runs through the glass, do not switch the stove on and call a service technician: this is a matter of safety, not cleanliness.