There are specific marble polishes easily found.
Marble wax seal.
To do this use grade 0000 steel wool.
This means it is nsf ansi 51 2012 compliant.
Marble is vulnerable to staining and discoloration so it should be sealed with a commercial grade stone sealer.
At a minimum wait at least 10 minutes for the wax to soak in.
Expect to seal every year despite popular sealant brands saying that they last three.
Lastly remove the wax from your countertop.
I recommend dupont stonetech bulletproof sealer.
Marble wax is used as a coating to protect the surface of the marble.
Since marble countertops grace many kitchens the sealer will also be certified safe for use where food is prepared.
Spread the sealer across the entire marble countertop with a clean dry cloth and let the sealer soak into the marble for the length of time specified on the product s container typically less.
It will usually only take a few minutes.
Spray the counter with a marble cleaner and buff dry with a soft cloth.
Remove the wax.
Stay away from wax and polish.
This will make your stone yellow.
Four no wax polishes.
What should you use as a sealant.
As you are carefully removing the wax you will need to make sure you are not getting wax back onto the countertop.
This will remove any impurities from the surface of the marble that may interfere with the sealing process.