A trained aesthetician is key to a successful Brazilian wax. Ask your friends for recommendations. Steer clear of too-good-to-be-true bargains and amateur-looking spas. The wax you aesthetician uses shouldn't have been used in previous appointments, because of the obvious threat of spreading germs and disease. The same goes for the tools she'll be using during the process; it's vital that they're sanitized between appointments. If your aesthetician doesn't wear gloves or test the temperature of the wax on her own skin first, you're not dealing with a professional. Take your $75 and go elsewhere.