If comment-OP concentrates for a minute, they can “flex” inward. Their Fabio-hair is drawn inwards and so is their facial hair until they seem completely clean-shaven. Then with a gasp they open their mouth and a long vine of hair spews out to strike down their enemies. Once the villains are downed, they can “flex” the hair back in through their mouth, and push it out of their head and face like before to look totally normal. They’re planning to become a superhero soon, but they just can’t think of a good hero name.