What should you not do when working with a client who has a known allergy?

Using products containing allergens without consultation is not appropriate when working with a client who has a known allergy. It is essential to prioritize the client's health and safety, and doing so would disregard that principle. Each client's allergy profile is unique, and exposure to allergens can lead to severe reactions, including skin irritations or more serious health issues.

Consultation is key in this scenario; it allows the cosmetologist to understand the client's specific allergies and preferences, ensuring that the products and services offered do not pose a risk. Informed decision-making is crucial, both for the client's safety and for maintaining a professional and trustworthy relationship.

The other actions, such as recommending allergy-friendly products, performing patch tests, and notifying the client of potential risks, all prioritize safety and effective communication. They are aligned with best practices in the cosmetology field, emphasizing the importance of customization and customer care.