What piece of electrical equipment uses a warm, humid mist to help expand the pores during a facial treatment?

The piece of equipment that uses warm, humid mist to help expand the pores during a facial treatment is the facial steamer. This device works by producing steam that increases moisture in the air, which in turn helps to soften and open up the pores on the skin. This process can enhance the effectiveness of subsequent skin treatments such as cleansing, exfoliation, and extraction, as the warm mist prepares the skin by increasing blood circulation and promoting relaxation.

While other devices, such as the infrared lamp or high-frequency machine, have their own benefits and uses in skincare, they do not utilize steam or mist to expand pores. A microdermabrasion machine focuses on physical exfoliation rather than the hydration and pore expansion provided by steam. The facial steamer is specifically designed for preparing the skin by adding moisture and warmth, making it essential for effective facial treatments.