You bought a shiny bathroom light two years ago. The light looked perfect above the mirror.
Now a brown line runs down the tile under one screw. The shine has small bubbles. One corner has gone dull and rough.
Nobody hit the light. Nobody dropped it. The hot shower did the damage, one morning at a time.
Your light lives in steam every day. Below, you will see which metal survives that steam, and how to check before you buy.
The short answer
Pick a bathroom light whose metal is solid stainless steel, not a shiny skin over iron. Plated metal looks the same on day one, but steam gets under the skin and the iron below rusts. A rust warranty in writing tells you the seller trusts the metal for years.
What is really going on
Most shiny bathroom lights wear chrome plating. Chrome plating is a thin metal skin, like the shine on a basic tap. Under the skin there is often steel, zinc or even plastic.
The skin is never perfect. Bathroom Butler, a maker of bathroom fittings, explains that tiny holes and cracks can sit in a plated surface. You cannot see them. Steam, soap and cleaning liquid can still reach the metal through them.
Once water touches the iron under the skin, rust starts. The rust pushes the skin up from below. You see bubbles first, then a brown line down the tile.
An Indian bathroom is hard on metal. Hot water fills the room with steam. In the monsoon, the walls stay damp for weeks. Your light hangs in that wet air all day and all night.
Stainless steel works another way. 304 stainless steel is the same grade as a good kitchen sink. The metal is stainless all the way through, so a scratch shows more stainless steel, not iron.
Stainless steel still needs gentle care. Bleach and strong acid cleaners can mark stainless steel too. A soft damp cloth is enough for a light.
How to check a bathroom light yourself
You can check any light in the shop or on a listing in five minutes.
- Ask the seller one question: “What metal is under the finish?”
- Hold a fridge magnet to the back plate; a strong pull usually means iron or plain steel.
- Read the listing for the metal, and treat “metal” or a blank line as a warning.
- Look for the IP rating, the number that says how well the light keeps out water, and match it to the spot.
- Ask for the rust warranty in writing, with the order date.
A magnet is a good first check, not final proof. The British Stainless Steel Association classes 304-type stainless steel as non-magnetic, but bent or worked stainless steel can pull a little. So use the magnet, then get the metal named in writing.
We checked twenty mirror-light listings on IndiaMART on 12 October 2026. Ten did not name the body metal at all. None of the twenty gave an IP rating.
When a listing will not name the metal, ask before you pay. A seller who knows the metal will tell you in one line.
Side by side
| What you care about | JagMag bathroom light | Plated metal light |
|---|---|---|
| Metal under the finish | 304 stainless steel all through | Often steel or zinc under a thin skin |
| Rusts in steam? | No | Yes, once steam gets under the skin |
| Rust warranty | Lifetime, in writing | Rarely stated on listings |
| Spare parts later | Kept for 10+ years | Ask the seller |
| Fit near the shower | No, dry wall only | Yes, if the listing shows IP44 or higher |
Where the other side is better
Some branded bathroom lights carry an IP44 or IP65 rating. Those lights can sit close to the shower. Our indoor lights are IP20, so they belong on a dry wall, away from splashes.
British wiring rules mark the area within 60 cm of a shower or bath as a splash zone. Lights there need IP44 or more. Outside that zone, an IP20 light is fine.
Plated bathroom lights are also easy to find. Sellers from Chennai to New Delhi list them, so the choice of shapes is wide.
What we do at JagMag
JagMag Lights is a manufacturer of decorative lights in Greater Noida. We make every metal part of our lights from 304 stainless steel, never iron or mild steel.
Our fluted glass vanity light is a good example. A craftsman bends and joins the stainless steel frame by hand in our own factory. Then the frame gets a soft satin brass finish. The ribbed opal glass turns the warm light soft on your face.
Every stainless steel part carries a lifetime warranty against rust, for orders from 4 October 2026. The written terms sit in our Legal Policies, section 4.1A. The warranty covers the steel, not the colour finish on top.
We keep spare parts for 10+ years. If you need a custom size or finish, we make it in 15–20 working days. You can see more lights in this family in our bathroom wall lights range.
Warm, soft light at the mirror also suits Vastu thinking, which prefers a calm glow in the bathroom to harsh glare.
For the full story of steel against iron in every room, read mild steel vs stainless steel lights. For outdoor walls, see will a waterproof wall light rust in the monsoon.
FAQs
Which bathroom light does not rust?
A light made of solid 304 stainless steel does not rust in normal bathroom steam. Plated lights can rust once water gets under the shiny skin.
Is chrome plating good for bathroom lighting?
Chrome plating looks good, but the metal under it decides how long the light lasts. If the base is steel, steam can reach it through tiny cracks and start rust.
What IP rating does a bathroom light need?
A light within 60 cm of the shower or bath needs IP44 or higher under British wiring rules. On a dry wall outside that zone, IP20 is enough.
How do I check if a light is stainless steel?
Start with a fridge magnet: a strong pull usually means iron or plain steel. Then ask the seller to name the metal and give a rust warranty in writing.
Can I use a JagMag wall light in my bathroom?
Yes, on a dry wall away from the shower, such as above the basin mirror. Our indoor lights are IP20, and any licensed electrician fits one in 20 to 30 minutes.
Nature gives the material. Human hands give it meaning. Light brings it to life.
Ready to choose? Browse our bathroom wall lights or every wall light we make. Not sure? Video-call us and we will help you pick the right spot.
Sources
- Bathroom Butler on ArchiPro: Why grade 304 stainless steel matters in bathroom accessories
- British Stainless Steel Association: Magnetic properties of stainless steel
- Ausko Group: The magnet test for stainless steel is not accurate
- Lumination: IP ratings for bathroom lights, zone by zone (BS 7671)
- IndiaMART: Mirror lights listings (checked 12 October 2026)
- IndiaMART: Bathroom lighting listings (checked 12 October 2026)
- JagMag Lights: Legal Policies, sections 4.1A and 4.1B
- JagMag Lights: Customized lights (lead time, spares, own factory)