Many artists add a layer of noise/grain to their painting in the end to make it more cohesive in texture and/or to mimic a photograph. Especially in portraits. Seeing grain doesn't necessarily mean it's a photo manipulation being passed off as a painting.
Unless you mean something else and I misinterpreted your comment.
gorgeous portrait of a gorgeous man I love your technique, particularly in awe of the hair, something I always sucked at congrats on the well-deserved DD, and on your whole gallery, I might never have found it and would have been deprived of such amazing art