How would you explain the process that estheticians typically follow to receive licensure?

complete required hours of training, pass both a written exam and a practical exam, and receive medical training
study anatomy and physiology of skin, pass both a written exam and a practical exam, and receive medical training
study anatomy and physiology of skin, complete required hours of training, and pass a written exam
study anatomy and physiology of skin, complete required hours of training, and pass both a written exam and a practical exam