There's a sort-of-racist, ultimately-complimentary, rhyming phrase that encapsulates the disinclination of African-Americans to show their age. That phrase is "black don't crack," and it's meant to indicate that their skin stays youthful looking for longer. (I'm not sure how comfortable I am using it, but it seems applicable here.)
Even so, there's no way this is a legitimate picture of Denzel Washington at age 63.
The guy looks great for his age anyway. Why mess around so much with the airbrush?
They've done something to the basic structure of his face, almost like his facial features are too big for the rest of his head. It does make him look younger, if that was the goal, but it also makes him look a little alien.
Not that touching people up in move posters would be exclusively a thing for black actors, not by any stretch (and not logically given that opening phrase). However, it did make me think of this poster:
Will Smith was 40 when this film came out, not 12.