When he got anxious, Eiffel liked to run his fingers through his hair. Somehow, this nervous habit could make him feel a little better. It drove Minkowski nuts, how in the middle of a crisis he’d take a hand away from the controls to grasp his own tangled curls. Eiffel, she’d say, this isn’t a hair salon, keep focused!
On the USS Unending Nightmare, as the effects of the cryo hit him, his hair would come away in clumps, making him feel even worse. Even after his rescue, he’d keep unconsciously trying to run his fingers through his hair, but his fingers met only the smooth skin of his exposed uneven scalp.
Minkowski noticed the way his hand would reach upwards and then hover as if lost. She found some wigs that she’d brought up there as props for talent shows. They all looked utterly ridiculous on him, but they did make Eiffel feel a little better.