What practice violates the regulations regarding salon services?

Offering services from an unlicensed salon is a clear violation of regulations regarding salon services. Licensing ensures that salons and their technicians meet specific health and safety standards, as well as qualifications set forth by state regulations. Operating without a valid license not only puts the health and safety of clients at risk, but it can also undermine the integrity of the industry as a whole. Unlicensed establishments may engage in unsafe practices, and clients may not have recourse if something goes wrong.

The other options listed, such as advertising services with a guest artist, discounting services for first-time clients, or offering referral discounts, typically do not violate regulations. These practices may actually be encouraged to promote business growth and client engagement, as long as they adhere to the guidelines set forth by regulatory bodies. Thus, the focus on maintaining proper licensing is crucial for compliance and protection of both clients and professionals in the field.