Pay attention to the red and small exclamation mark that could appear over the scissors icon. That means that you are ready to introduce a new hair or beard style in your barbershop! 
As you earn reputation points, your offering will expand with different and creative new styles, both in haircuts and beard trims.
There are three categories: basic, advanced, and elaborate (represented as bronze, silver, and gold, respectively), and they will have different service times and prices. Don't forget to update your barbershop objects accordingly!
Tap on the scissors icon not only to unlock new styles but to add prestige purple stars to your already unlocked ones!