First Character's/Mayor's Hairstyle: 0x24
I'm assuming that hairstyle values are not gender-exclusive, since you are able to obtain hairstyles normally available to the opposite sex in the game.
Hair Values:
00: Male, Middle/Formal, I'm a trouble maker!, Rebel for life!
01: Male, Casual, My room is clean!, I like to style my hair!
02: Male, Extremely Formal, Business!, Fresh!
03: Male, Extremely Casual, Stylish side!, I'm a role model!
04: Male, Casual, My room is clean!, Natural is best!
05: Male, Casual, It's on the messy side, It's on purpose!
06: Male, Middle/Formal, I'm very serious!, Grin and bear it!
07: Male, Middle/Formal, I'm very serious!, Fight and overcome!
08: Male, Casual, It's on the messy side., I wish I could clean it.
09: Male, Extremely Formal, Business!, Vintage!
0A:
0B:
0C: Male, Extremely Casual, Loose and Wavy!, Laid-back looseness.
INCOMPLETE
Refer to the chart for each style's appearance.