Any cosmetologist who is a cosmetology salon owner, at least twenty-three years of age, who is a high school graduate or the equivalent thereof, who has had at least five years experience as a licensed cosmetologist in Pennsylvania, and who is a holder of a teacher's license, may instruct apprentices in a duly licensed cosmetology salon, provided that there shall be no less than two licensed cosmetologists in addition to the teacher for each apprentice in any salon and there shall be no more than two apprentices in any salon, and provided such salon is not held out as a school of cosmetology and provided each teacher instructing an apprentice shall report quarterly hours to the board on a form provided by the board. Such apprentices may apply for examination at the end of their apprenticeship at the next regular examination held by the board, and, if successful therein, shall be licensed as cosmetologists. Registered apprentices upon completion of their required term of apprenticeship, may apply for, and receive from the department, a temporary permit to practice in the field of cosmetology until the next regular examination. Nothing in this act shall prohibit an owner from hiring a cosmetology teacher to instruct apprentices.