When using sodium hydrochloride for disinfection, what is its primary function?

Sodium hydrochloride is primarily used for its disinfectant properties, which involves killing bacteria and viruses. This function is crucial in esthetics and skincare, as proper disinfection is necessary to prevent infections and maintain skin health during treatments. Disinfectants like sodium hydrochloride are vital for ensuring that tools and surfaces used in esthetic procedures are free from harmful pathogens, thereby protecting both the client and the practitioner.

While the other choices involve beneficial aspects of skin care and treatment, such as moisturizing the skin, stimulating collagen production, and enhancing skin texture, they do not accurately describe the primary role of sodium hydrochloride. These functions pertain more to ingredients and treatments specifically designed to improve skin quality and health rather than disinfection.