What should a cosmetologist do after completing a hair service?

After completing a hair service, it is essential for a cosmetologist to assist the client with the scheduling and payment process. This step is vital for ensuring a smooth transition out of the salon and maintaining a professional relationship. It provides the client with an opportunity to book future appointments, which can contribute to customer retention and satisfaction. Additionally, handling the payment process promptly and efficiently helps reinforce the client’s positive experience at the salon, demonstrating professionalism.

The other choices, while beneficial in different contexts, are secondary to the immediate necessity of finalizing the service and ensuring the client's plans for future visits are in place. For instance, offering a deep-conditioning treatment, applying styling products, or conducting a follow-up consultation could enhance the overall service experience but are not typically part of the immediate post-service protocol that a cosmetologist should follow.