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Published 15/06/2026

How to remove rainbow stains from stainless steel cookware

Seeing a rainbow tint develop over your stainless steel isn't ideal, but don't panic! Rainbow tint doesn't impact the pan’s performance - it's simply an aesthetic imperfection that can be easily removed.

If you've seen a rainbow stain develop across your stainless steel cookware, here are the a few ways to remove the tint, so your cookware is back to looking its very best. Here's how to remove the rainbow-hued tint but also why it develops in the first place.

What causes rainbow tint?

Rainbow tint is very normal, very manageable and caused by starch residue that’s left over from foods with a high starch content. The rainbow stain is also a result of the oxidised layer on stainless steel cookware thickening when exposed to high temperatures.

Does a rainbow tint impact the pan’s performance?

The short answer: no, it doesn’t. Rainbow discolouration is an aesthetic issue and one that can be removed, so if the rainbow tint doesn’t bother you, then you can continue cooking with the pan in question. However, if you do want to remove the rainbow stain, here are our tips on how to do so.

How to remove rainbow stains from stainless steel

To remove rainbow heat tint, we recommend using white vinegar and a non-scratch scourer or soft cloth. Then, to remove the starch residue we suggest mixing bicarbonate of soda with water to create a paste and a non-scratch scourer. Gently clean to remove any stains. Dry completely and repeat if needed.

To help prevent rainbow tint, we advise cooking over a moderate heat as excessive heat can cause discolouration. Always read the cookware’s care instructions before using.

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