Will GTA 6 have haircuts and barbershops?
The direct answer
Yes. A grooming salon is confirmed in Vice City, so haircuts and styling return.
Rockstar’s Ultimate Edition material names Sara’s Unisex Salon in Vice City, confirming hair and styling as part of character customization.
Combined with confirmed clothing stores and a tattoo parlor, personal appearance is shaping up as a real system in GTA 6, as in GTA 5.