All estheticians must be licensed in the state that they are working in. They complete 260 to 600 hours of training which depends on the state and pass both a written and a hands-on exam.
Estheticians are not medical doctors so they cannot diagnose skin conditions. They cannot prescribe medications, or suggest treatment for any skin condition except for cosmetic products. They can however, perform treatment complementary to a doctor's treatment. Some estheticians may work closely with dermatologists either in the physician's office or by referral.