Which action is prohibited when practicing cosmetology on an expired license?

Charging clients for services while practicing cosmetology on an expired license is prohibited because it signifies a violation of legal and professional standards. Licensure is a regulatory mechanism that ensures practitioners meet the necessary education and competency requirements to provide safe and effective services to clients. When a license expires, the practitioner is no longer authorized to perform services for compensation, as doing so poses risks both to the client's health and safety and to the integrity of the profession.

Additionally, providing services to family members, practicing without supervision, or offering promotional deals might not inherently carry the same legal implications as accepting payment from clients. However, charging for services while unlicensed is a clear infringement of regulatory guidelines, which are designed to protect consumers by ensuring that all beauty and personal care services are performed by qualified individuals. This ensures that clients receive services that are safe and performed in accordance with health and safety standards mandated by the state.