Tarnished silver isn’t dirty—it’s silver sulfide, formed when silver reacts with sulfur compounds in the air.
When you put silver + aluminum foil + baking soda + hot water together, you create a simple electrochemical reaction:
Aluminum is more reactive than silver
Sulfur “prefers” aluminum over silver
The sulfur transfers from the silver to the aluminum
The silver is reduced back to its shiny metallic form
In short:
👉 The tarnish moves from the silver onto the aluminum
That’s why the foil often turns dark while the silver brightens.
What each ingredient does
Aluminum foil – Acts as the sacrificial metal that pulls sulfur away
Baking soda (sodium bicarbonate) – Acts as an electrolyte to speed up the reaction
Boiling water – Accelerates the chemical process
Sugar – ❌ Not necessary (this is a myth and adds nothing)
Important things most articles don’t tell you ⚠️
✅ Works best on real silver or silver-plated items
❌ Does not work well on stainless steel (it doesn’t tarnish the same way)
❌ Can damage:
