I have tried gumption bleach vanish preen toothpaste bicarb jiff vinegar elbow grease denture cleaner ect I am afraid my stain in my vanity sink is here to stay

I have tried borax gumption tooth paste vanish preen elbow grease Bicarb denture cleaner I am afraid my stains in my vanity are here to stay

I used Norwex Cleaning paste and Elbow Grease very successfully.

I would try gumption too, it’s great stuff fingers crossed you get the stains off

Id be interested to see how you went removing this just for future reference, hope some of these remedies worked for you x

Try leaving gumption on the stain overnight, then scrub and wash down

Not sure if this will help but best of luck..
I poured clove oil around the edge of a plastic spa bath.
This is not a stain, you’ve actually burnt it. It damages the surface of the plastic. You’re going to need to use a combination of equal parts glycerine and talcum powder. It will form a soft paste that is actually a very fine grained cutting compound. It will take the very top surface off so that it removes the burn mark without leaving gouge marks in it. It takes quite a bit of polishing, so use your pantyhose.
From Shannon Lush.

If its white, try either nail polish remover or jiff.

Try scrubbing with Jif (the old fashioned cream one) with a scourer. Bleach? but if it has really stained it, nothing will remove it that I know of.