What detail must all advertising by cosmetology establishments include?

All advertising by cosmetology establishments must include the establishment's license number to ensure transparency and compliance with legal requirements. This practice serves multiple purposes: it provides consumers with a form of assurance that the establishment is legally authorized to operate and adhere to health and safety regulations. The presence of a license number in advertising helps maintain professional standards in the cosmetology field and fosters trust with clients, as it indicates that the establishment is committed to upholding the necessary guidelines set forth by the state.

While including employee names, seasonal promotions, or a list of services can be beneficial for marketing and engagement, they are not mandated by law in the same way that the establishment's license number is. The objective of having clear regulations around the advertisement of cosmetology services is to protect both the public and the integrity of the profession.