Maybe he is on a lower caliber dosage of adrenochrome.

I read they would give them animal adrenochrome in Gitmo to keep them alive (they really are vampires that they will die without it) and keep the tattle tales flowing.

Where that was filmed didnt look too glamorous, maybe a solitary recreational yard perhaps? Whoever showed up seemed to be more in control than the A class actor was plus his hair went from a sandy blond to almost pure white in less than a week.