Go to Bloodstone
To get the "Bald Dread" dreadlocks haircut, visit the stylist in Aurora. Your character visits this area fairly late in the game, and you will be unable to visit until you reach a certain point in the storyline. Also, visit the stylist during the day, or the shop will be closed. If you arrive at night, go to an inn and sleep for a few hours to pass the time until morning.
Get a Discount
If you're short on money, befriend the shop's stylist before making your purchase. Look at his information sheet to learn his favorite expressions, then use them in your interactions with him until you become friends. Making friends with shop owners always results in a modest discount.
Get the Style
Once you've befriended the stylist, go ahead and purchase the dreadlocks haircut. You can purchase and apply the cut from the stylist's shop. If you change your mind, talk to the stylist again and apply a different haircut instead.
Full Dreads
Although "Fable 3" doesn't have a dreadlocks style that covers your full head, you can give your character the appearance of a full head of hair by donning any of the myriad hats available throughout the world. The hat will cover the top of your character's head, covering the "Bald Dread" bald spot.