During a facial treatment, what effect does the negative pole have on the tissue?

The correct choice indicates that the negative pole of galvanic current during a facial treatment has a soothing and softening effect on the tissue. This phenomenon is attributed to the electrochemical reactions that occur when the negative pole is used. The negative pole can help to increase blood circulation, promoting relaxation in the muscles and tissues, which results in softer and more pliable skin.

In various skin treatments, especially those involving deep cleansing or hydration, the use of the negative pole can facilitate the absorption of products into the skin, further enhancing the softening effect. This is because negatively charged ions can help to open up the skin's pores, allowing for better penetration of moisturizing agents.

Understanding the specific effects of electrical polarity is essential for estheticians to tailor treatments that will achieve the desired outcomes for their clients while ensuring safety and efficacy.