All licenses issued to master barbers by the Department of Public Health shall be renewed once every two years, and shall expire in accordance with the provisions of section 19a-88. No person shall carry on the occupation of master barber after the expiration of his license until he has made application bearing the date of his insignia card to said department, accompanied by a fee of one hundred dollars for the renewal of such license for two years. Such application shall be in writing, addressed to said department and signed by the person applying for such renewal.