Best cleaner for ceramic sink

[MissFoodie]

Is cif or the pink stuff ok on a ceramic sink?!!
Am afraid of scratching it!
There are some grey marks which I suspect are from stainless steel pans etc

Try a damp Magic Eraser first. Whatever you would use on mugs should be fine on a ceramic sink.

Bar Keepers friend powder

Biological washing powder. Leave the sink filled with water and throw some in overnight.

Cif cream is very good.

Barkeepers friend only thing that shifts similar marks in my sink.

I use the pink stuff, gets rid of those metal pan marks or any other grime in seconds and doesn't damage the surface at all.
I just pick a dab up with a damp cloth, do a couple of circles over the mark and rinse and it's spotless and gleaming

I found out by accident that vanish powder - the stuff you soak white laundry in to get stains out - works really well! I was soaking some polo shirts in the sink and noticed afterwards that my sink looked like new.