Great facial hair on this chap and at a guess he’s also a redhead from those freckles etc.

On a close up of his face you can make out some poorly added tinting/painting to the eyes and the eyebrow.
His cheeks are tinted a little more subtle.
I was reading somewhere that tintypes/ambrotypes were often tinted or painted, this was at the sitters expense and varied in quality.
Also that the colours would fade over the years and thats why often you only see rouged cheeks and gold jewellery. For some reason they lasted longer?

Nice little tintype measuring 2 1/4 x 3 1/2 inches