Licensure/ Board Exam for Aspiring Makeup Hair Stylist Etc?

I bet most of you go to a salon to have your hair, nails, or makeup done.  But how 100% sure are you that the person doing your hair, nails and makeup is truly trained and certified or much better have the license to do such?  Have you ever experience your toenails hurting really bad because of a newbie so-called "nail-technician" who did your pedicure?   Were you able to get the justice you needed for your murdered nails or just shun it away and swore never to go back to that salon ever again.  Wouldn't it be nice if they get a license to practice the said profession?   What do you think of having board examination for those who are in the hair and beauty practice?  Licensure/ Board Exam for Aspiring Makeup Hair Stylist Etc?