Stu Rosen is the owner of MB Stone Care, he makes all the polishes and cleaners and stuff. He's incredibly knowledgeable, but works himself to death, so he's not online as much.
STT CE is a really good sealer. STT (Surface Treatment Technologies) no longer exists, but you can get the same stuff under the MB-21 label, Stu acquired the formula from the owner of STT, who has since passed away. It is an odor free color enhancer with very good sealing capabilities. It also is much more smudge resistant than other enhancers. CEX 100 is very similar .
We have a process for honed black absolute that involves MB-21 or CEX 100 and Wipe n Seal. Then it gets maintained with our Ultimate spray polish. Honed black absolute is notorious for smudging.
The dye comes out easily because of how dense BA is, it never really goes very far in to begin with.