Final answer:
In order for a cosmetology student to work on the public, they need to complete a certain number of contact hours, as regulated by each state.
Step-by-step explanation:
In order for a cosmetology student to work on the public, they need to complete a certain number of contact hours. This requirement varies by state, as each state sets its own regulations for cosmetology licensing. For example, in the state of California, a cosmetology student needs to complete a minimum of 1,600 contact hours before they can work on the public.