Stainless steel is everywhere in commercial buildings: kitchen benches, coolroom doors, lift panels, handrails, splashbacks, toilet partitions and shopfront trims. It is chosen because it is hygienic and durable, but it shows every fingerprint, water mark and smear. Using the wrong product also causes real damage — chlorides and steel wool can leave rust spots on a surface that should never rust. A good stainless steel cleaner and the right technique keep it looking new for decades.
For daily presentation work, a combined cleaner and polish such as Agar Steel Shine, a stainless steel and aluminium polish, removes fingerprints and leaves a protective film that slows re-marking. Below we cover how stainless steel resists corrosion, which products to use and which to avoid.
Why Stainless Steel Needs the Right Cleaner
Stainless steel resists corrosion because of a thin, invisible chromium oxide layer on its surface. That passive layer repairs itself when exposed to oxygen, but it can be overwhelmed by:
- Chlorides from bleach, hydrochloric acid, salt and some pool and coastal environments.
- Iron contamination from steel wool, carbon steel scrapers or wire brushes, which leaves particles that rust on the surface.
- Trapped dirt and deposits that stop oxygen reaching the surface.
That is why the choice of stainless steel cleaner matters more than on most surfaces. The Australian Stainless Steel Development Association’s advice on cleaning indoor stainless steel recommends regular cleaning with water and mild detergent, thorough drying, and never using steel wool.
Types of Stainless Steel Cleaner
Neutral Detergents
For routine hygiene cleaning, especially on food contact surfaces, a neutral detergent in warm water is the first step. Rinse and dry to prevent water spots.
Cleaner-Polishes
These lift fingerprints and smears and leave a thin protective film. They are ideal for appliance fronts, lift doors, handrails and front-of-house fixtures where appearance matters.
Stainless Steel Oils
Oil-based finishes give a deeper sheen and resist fingermarks for longer. They are best on non-food areas such as lift interiors, display surfaces and decorative panels, and should be applied sparingly.
Specialist Restorers
For tea staining (brown discolouration common on outdoor or coastal stainless), heat tint or light surface rust, use a dedicated stainless steel restorer or passivating product, following the label closely.
How to Clean Stainless Steel Step by Step
- Remove loose soil with a damp microfibre cloth.
- Wash with a neutral detergent or diluted degreaser if grease is present, working along the direction of the grain.
- Rinse with clean water — especially on food contact surfaces or after using any stronger chemical.
- Dry completely with a clean, dry microfibre cloth to avoid water marks.
- Apply the stainless steel cleaner or polish sparingly to a cloth (not directly onto the surface) and buff along the grain.
- Buff off excess with a second dry cloth for an even, streak-free finish.
What Not to Use on Stainless Steel
- Steel wool, wire brushes or carbon steel scrapers.
- Undiluted bleach or chlorine-based cleaners left to dwell.
- Hydrochloric acid, brick cleaners or strong acid descalers.
- Coarse abrasive powders and green scourers on polished finishes.
- Dirty cloths that redeposit grease and grit.
If a chlorinated sanitiser must be used on stainless steel for hygiene reasons, use it at the correct dilution, respect the contact time and rinse thoroughly afterwards.
Stainless Steel in Commercial Kitchens
Kitchen stainless steel faces grease, heat, salt and constant sanitising. Clean with a food-safe degreaser, rinse, sanitise and dry. Keep polishes and oils for non-food surfaces such as fridge doors, rangehood exteriors and bench fronts, and make sure any product used near food is suitable for food premises. Cloth choice matters as much as chemistry: well-maintained microfibre cleaning cloths lift grease and dry the surface without lint or scratches.
Lifts, Handrails and Front-of-House
High-touch stainless in lifts, lobbies and washrooms needs frequent attention. Disinfect touchpoints with a product that is compatible with stainless steel, then finish with a light polish during the evening clean so panels look sharp each morning. A stainless steel cleaner with a fingerprint-resistant film reduces how often daytime touch-ups are needed.
How Often to Polish Stainless Steel
- Kitchens: clean and sanitise after each service; polish non-food surfaces daily or weekly.
- Lifts and lobbies: spot clean daily; full polish two to three times a week.
- Washroom partitions and fixtures: clean daily; polish weekly.
- Outdoor stainless: wash every one to three months (more often near the coast) to prevent tea staining.
Buying Checklist: Choosing a Stainless Steel Cleaner for Your Site
When comparing products, ask these questions before you order:
- Where will it be used? Food contact areas need food-safe products and rinsing; lifts and fit-outs can use oils and polishes.
- Is it chloride-free? Check the SDS. Chloride content is the most common cause of pitting and rust spots.
- Does it leave a protective film? Film-forming polishes cut daytime fingerprint touch-ups in busy lobbies and lifts.
- Is it compatible with aluminium and chrome? Many sites have mixed metals; a product safe on all three simplifies the trolley.
- What pack size suits you? A 1 litre bottle suits a single café; 5 litre packs are more economical for contract cleaners and multi-site facilities.
- How is it applied? Aerosols are convenient but cost more per use; liquid polishes applied to a cloth give more control and less overspray.
Standardising on one stainless steel cleaner across all sites also makes training easier and keeps the finish consistent, which matters for hotels, retail chains and property managers responsible for multiple buildings.
Frequently Asked Questions
What is the best stainless steel cleaner for commercial kitchens?
For food contact surfaces, a neutral detergent followed by a food-safe sanitiser is best. For appliance fronts and non-food surfaces, a stainless steel cleaner-polish gives a streak-free finish and resists fingerprints.
Why does my stainless steel have rust spots?
Usually because of iron contamination from steel wool or scrapers, or chlorides from bleach or salt. Clean with a suitable restorer and switch to non-scratch pads and chloride-free products.
Can I use glass cleaner on stainless steel?
Many glass cleaners are fine for a quick wipe, but they do not leave a protective film. A dedicated stainless steel polish lasts longer between cleans.
Keep Stainless Steel Looking New
With the right stainless steel cleaner, clean cloths and a routine that works along the grain, commercial stainless steel stays hygienic, bright and corrosion-free. Avoid chlorides and steel wool, dry thoroughly and polish on a regular schedule.