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

When practicing cosmetology on an expired license, charging clients for services is prohibited because it typically constitutes unauthorized practice. An expired license signifies that the individual is not legally allowed to operate in their professional capacity. Charging clients implies a financial transaction that requires the practitioner to be licensed and authorized by the relevant state regulatory body. This situation not only brews potential legal actions against the practitioner but can also lead to repercussions for any clients who received services, as they might be engaging in an agreement that is deemed invalid due to the practitioner’s lack of a current license.

The other options involve varying degrees of non-compliance but may not always result in legal actions as straightforwardly as charging for services. For instance, providing services to family members might not involve any financial transactions. Practicing without supervision can breach ethical guidelines but may not necessarily attract legal penalties as directly as charging clients. Offering promotional deals might raise questions about validity, but again, it largely hinges on the licensing status, where the ability to engage in any monetary transactions is clearly compromised with an expired license.