When should a stylist perform a patch test before applying a new hair dye?

Performing a patch test before applying a new hair dye is essential for determining if the client has an allergy or sensitivity to the product. This step should always be taken prior to the first application of a hair dye, as it helps ensure the safety and well-being of the client. Hair dye formulations can contain various chemicals that may cause adverse reactions in some individuals; therefore, conducting a patch test allows the stylist to assess any potential allergic reactions in advance.

This practice is crucial not only for the first application of a product but also for any subsequent applications of a new dye brand or formula, as sensitivities can develop over time. By adhering to this protocol, the stylist demonstrates professionalism and care for their client's health and safety, fostering trust and confidence in their services.