I have a brother-in-law who's been dyeing his hair, and wears a toupee (a very poorly fitting one) - for whenever he's at some kind of formal function or whatnot.
This is a guy who drives dump trucks and excavators, and could crush you with one hand - I swear to $DEITY. He's not a bad guy - actually a very nice man. But if you got on his bad side, watch out. I once saw him lift a full large wheeled garbage bin up and over his head and shake it out like it was nothing - like it was kitchen garbage can. Not someone to mess with.
He normally - in everyday life - doesn't care what he looks like, smells like, etc - he'll go right into a grocery store covered in oil and grease from working on his backhoe in the middle of summer, buy a soda and walk out, and he'll smile and wave, call ya "hon" and "boss" - pet the dog on the way out, ya know.
But clean him up and put him in a suit - all of a sudden he's embarrassed that his hair is thin and gray, etc. I've told him that he should shave himself bald, because he's got that classic "Mr. Clean" head shape that would make it look good. Few people can rock bald, but he won't do it.
Instead, he just puts a ball cap on if he's out in the sun, and ignores it I guess.