What must cosmetologists do before using any new chemical products on clients?

Before using any new chemical products on clients, it is essential for cosmetologists to perform a patch test. A patch test involves applying a small amount of the product to a discreet area of the client's skin to check for any allergic reactions or sensitivities that may arise. This precaution helps ensure the safety and well-being of the client by identifying potential adverse reactions prior to full application.

Performing a patch test minimizes the risk of causing an allergic reaction or skin irritation that could lead to discomfort or more severe consequences for the client. It is a standard practice in the cosmetology field to safeguard both the client and the professional.

While asking the client about allergies is important and can certainly contribute to the overall safety of the service, it does not provide the definitive confirmation that a patch test does. Consulting with a supervisor might be necessary in some situations, but it does not replace the need for a patch test. Documenting products used is a good practice for record-keeping, but it does not address the safety protocols necessary before application.