Below are two stain removal methods.
Cleaning marble sink stains.
The steps below can help you clean your granite composite sink as well as remove any water spots limescale deposits and various other stains.
These stains can be the result of a water glass that was left on a marble countertop for too long or from hard water buildup around sinks and showers.
Begin by clearing out any dishes and debris from your sink.
Treat remaining stains or buildup with a cleaning agent.
One for removing mineral deposits and the other for removing general stains.
Cultured marble is a beautiful material but one that requires special care to keep it in good condition.
You can then use mild dish soap and hot water to scrub the sink clean.
This product should not have abrasives which can scratch or compromise the finish of your marble.
If you spilled anything oil based like a vinaigrette.
You can wet stand the stain on that cultured marble sink sure but then you ll remove the finish and end up with a bare spot.
Mold stains mold is a common problem in many bathroom settings.
And you ll have to cover that spot with high gloss finish and match the sheen to the rest of the sink.
Select a cleaning agent that is intended for marble or similar stone.