Stains on black granite splash-back

[BazzaS]

I decided to clean the grease off of the splash-back behind my stove and I think I've been very silly ! I used a warm washing up liquid/water solution and scrubbed with a plastic scourer. Now I've got a grey streaky residue or stains which I can't remove by just wiping with either a damp or dry cloth.
Have I ruined it for ever ?
Can anyone out there please advise me how to recover from this ?

Thanks

 

[cumbriahandyman]

I decided to clean the grease off of the splash-back behind my stove and I think I've been very silly ! I used a warm washing up liquid/water solution and scrubbed with a plastic scourer. Now I've got a grey streaky residue or stains which I can't remove by just wiping with either a damp or dry cloth.
Have I ruined it for ever ?
Can anyone out there please advise me how to recover from this ?

Thanks

Try white spirit...

 

[foxhole]

Does not sound like you have removed the grease merely smeared it around?

 

[BazzaS]

Thanks for your responses.
White spirit didn't make any difference.
I've tried warm washing up liquid and a cloth which I would have expected to remove any smears but the stains/smears are still there.

Any more thoughts ?
Thanks

 

[freddiemercurystwin]

http://www.granite-care.co.uk/granite-worktop-accessories/granite-care-clean-and-sheen