I've had a black cook top for 11 years , I use ( weiman cook top max ) micro-bead scrubbing power
it's a past . after you scrub your cook top wipe with a wash cloth get all the polish off .
now wipe with a clean cloth something like a dipper or cotton towel , not bath towel cotton .
you can get this polish at Walmart . cook top as to be cool ,
hope this helps …