If you're concerned about a messed up head, either shave it all off or comb over the scars.
"He'd just shave his mustache off, maybe dye his hair and lose weight," Betsy grumbled.
Katie fought back a smile at the irritated look on Rhyn's face. He was in raw form: bloodied, drenched with underworld rain, disheveled, in need of a good shave. His thick frame was still on edge, as if he expected one of the Sanctuary's nuns to turn into a demon and fly at them. He looked every bit the muscular, powerful, glowering half-demon the nuns wanted to throw out of the Sanctuary.
It doesn't give a good clean shave, so I use one of these a couple times a week.