What action is prohibited regarding hair removal methods?

The correct choice indicates that performing hair removal before manicures or pedicures is not permitted. This regulation is rooted in sanitation practices intended to maintain hygiene and prevent cross-contamination in salons and spas. When hair removal is done before nail services, the risk of transferring bacteria or pathogens to the skin or nails increases, potentially leading to infections or other complications.

It's important to understand that each of the other options misconstrues the regulations. While some might think that hair removal is entirely against the rules, this is not the case; certain methods may be performed under specific guidelines. Additionally, the prohibition of only waxing or only electrolysis does not capture the broader scope of regulations regarding the order of services and the importance of maintaining a sanitary environment for both practitioners and clients. Proper sequencing of beauty services is crucial for health safety protocols in any establishment.