I have no idea want your sink is made of,,, we use Soft Scribe on our kitchen sink @ home,,, it is made of a composite material like Coriander ??? Once we get it good & clean I polish it with a coat or 2 of Gel-Gloss,,, It will then be much easer to keep clean for a while,,, until it needs to be polish again !!! Should be able to find it @ any home improvement center !!! Funny but the thing that stains our sink the most is Onions !!! They turn our Almond sink black or dark gray ???