Which of the following benefits is TRUE of using the negative pole (cathode) during a facial treatment with devices?

Which of the following benefits is TRUE of using the negative pole (cathode) during a facial treatment with devices?

• A. Increased blood flow
• B. Decreased blood flow
• C. No change
• D. Increased oil production

Answer: (A)

The key idea is how polarity in galvanic facial devices affects both chemistry at the skin and the local blood vessels. The negative pole, or cathode, creates an alkaline environment at the skin surface by generating hydroxide ions. This alkalinity helps soften and emulsify sebum and debris (desincrustation), which is a common goal in facial treatments. At the same time, this polarity and the current stimulate superficial blood vessels, leading to increased blood flow to the treatment area. That boost in circulation brings more nutrients and helps remove waste, contributing to a healthier, more vibrant skin surface after treatment. So, the increased blood flow outcome aligns with the physiological response expected from using the negative pole. The other possibilities don’t fit with how cathodal treatment typically works: vasoconstriction (decreased blood flow) isn’t the effect seen here, a complete lack of change ignores the vascular response, and increased oil production would counteract the desincrusting effect of the alkaline environment.

The key idea is how polarity in galvanic facial devices affects both chemistry at the skin and the local blood vessels. The negative pole, or cathode, creates an alkaline environment at the skin surface by generating hydroxide ions. This alkalinity helps soften and emulsify sebum and debris (desincrustation), which is a common goal in facial treatments. At the same time, this polarity and the current stimulate superficial blood vessels, leading to increased blood flow to the treatment area. That boost in circulation brings more nutrients and helps remove waste, contributing to a healthier, more vibrant skin surface after treatment.

So, the increased blood flow outcome aligns with the physiological response expected from using the negative pole. The other possibilities don’t fit with how cathodal treatment typically works: vasoconstriction (decreased blood flow) isn’t the effect seen here, a complete lack of change ignores the vascular response, and increased oil production would counteract the desincrusting effect of the alkaline environment.