It's clear from touching Benedict's hair-- clearer than it already was by looking at it-- how well he cares for it, and the hours he puts into its upkeep. He may not be able to afford all his fancy oils and creams anymore, but he does what he can.

And then Allumin's hand knots in it, which makes Benedict gasp aloud in... pain? Horror? Outrage? Maybe all of the above, but he takes a beat to think on it, and his wide eyes meet Allumin's.
He nods lightly, wincing as it pulls at his scalp. Yep, that's good.