Final answer:
Esthetics students must complete a state-mandated number of training hours in both theory and practice to be able to perform services on patrons professionally after passing their state exams.
Step-by-step explanation:
The number of hours an esthetics student must complete before performing services on patrons differs by location, as each state has its own licensing requirements. However, many states require students to complete a specific number of training hours in a licensed esthetics program. These hours include both theoretical instruction and hands-on practice to ensure the student is well-prepared and skilled in providing various esthetic services. Once they meet the required hours and pass their state exams, they can perform esthetic services professionally.