(a) The board shall have the power to refuse, revoke, and suspend licenses and certificates, strictly in accordance with this article, upon proof of violation of any of the rules and regulations promulgated by the board, or upon proof of violation of any of the sections of this article.

(b) The board may refuse to grant or may revoke or suspend any certificate or license issued in any case where the holder of or applicant for such license or certificate shall have been guilty of fraud or dishonest conduct in the taking of the examination herein provided for, shall at any time have been convicted of a felony involving the barber profession, shall be guilty of grossly unprofessional or dishonest conduct, shall be addicted to the excessive use of intoxicating liquors or to the use of drugs to such an extent as to render him or her unfit to practice in any of the practices or professions set forth in this article, shall advertise by means of knowingly false or deceptive statements or shall fail to display the license or certificate issued to him or her as provided for in this article. The board, on any of the grounds in this section stated, shall not refuse to issue or renew any license or certificate, nor shall it revoke or suspend any such license or certificate already issued except after a hearing, of which the applicant or licensee or the holder of the certificate affected shall be given at least 20 days’ notice in writing, specifying the reason or reasons for denying the applicant a license or certificate of registration, or in case of a suspension or revocation, the offense or offenses of which the licensee or the holder of the certificate of registration is charged. Notice may be served by mailing a copy thereof by registered or certified mail to the last known residence or business address of the applicant, licensee, or holder of a certificate. The hearing on such charges shall be held in Lauderdale County at such time as the board may prescribe.