What action should a practitioner avoid while performing cosmetology services?

Being under the influence of substances is a critical action that a practitioner must avoid while performing cosmetology services. This principle is vital to ensure the safety and well-being of both the client and the practitioner. When a practitioner is under the influence, their ability to provide services can be impaired, leading to potential errors in technique, a lack of attention to detail, and an overall compromised standard of care. Maintaining a clear mind is essential in this profession to uphold high hygiene standards, utilize proper equipment safely, and ensure client comfort and safety.

The other actions listed, such as using protective equipment and formulating new client contracts, are practices that contribute positively to the salon environment and client relations. Consuming coffee or tea in moderation does not generally impair a practitioner's ability to perform services effectively, assuming it does not lead to excessive jitters or distractions. Therefore, avoiding the influence of substances is paramount in safeguarding the professionalism and accountability expected in the cosmetology field.