What is the primary benefit of using a warm towel on a client?

Using a warm towel on a client primarily serves to relax the hair and open the pores. This practice is beneficial because the warmth helps to soften the outer layer of the hair, making it more pliable and easier to cut or style. Additionally, the heat from the towel stimulates blood circulation in the scalp, which can enhance the effectiveness of any products being used, such as conditioners or scalp treatments. Opening the pores allows for better absorption of these products, improving hydration and overall hair and skin health.

By contrast, options that suggest dehydrating the skin or cooling down the scalp would not align with the soothing and invigorating purposes of warm towels. Similarly, while a warm towel may indeed contribute to a client's overall satisfaction with the service, its primary benefit lies in the physical effects it has on the hair and skin rather than extending the longevity of the service itself.