Which aspect of treatment does the nervous system directly influence?

The nervous system has a significant role in client relaxation and responsiveness during esthetic treatments. When a client is receiving a facial or any form of skincare treatment, the state of their nervous system can directly affect their level of relaxation, response to touch, and overall comfort. A calm and relaxed client is more likely to respond positively to treatments, leading to better outcomes in terms of effectiveness and satisfaction with the service received.

Various techniques used in esthetics, such as massage or soothing product application, are designed to engage the parasympathetic nervous system, promoting relaxation and stress relief. This response can also enhance the skin's appearance, as stress—managed through the nervous system—can negatively affect conditions like acne or premature aging.

Other aspects like skin hydration, color and texture, and acne treatment efficacy may be influenced by various factors including products and environmental conditions, but they do not have the same direct and immediate correlation with the nervous system's functions as client relaxation and responsiveness do.