What action should be taken if a client has an allergic reaction to a product used?

Discontinuing use immediately and seeking medical attention if necessary is the appropriate action to take if a client exhibits an allergic reaction to a product. Allergic reactions can manifest in various ways, including redness, swelling, rashes, or even more severe symptoms that require professional medical evaluation. Prioritizing the client’s health and safety is crucial; thus, stopping the use of the product prevents further irritation or complications.

Moreover, seeking medical attention ensures that the client receives proper care for their reaction, which can be vital depending on the severity. It shows professionalism and a commitment to the client's well-being, which is essential in the nail technology field. This action is aligned with best practices in the beauty industry, emphasizing the importance of client safety above all else.