"Fine." Loki didn't mutter magic words, wave his hand, or outwardly do anything at all except return his attention to his book. Illusions were his specialty, and one as small and simple as that? He barely had to think. Between one second and the next, the bruise disappeared.

It was actually still there, of course. Stark wanted makeup, not healing. Which was good, because once more: not a healer. "Come back tomorrow, it'll need to be recast daily until it's not needed anymore."