In micro-current therapy, what is the behavior of the negative probe on the face?

• A. Works toward red upward (except when working on eye)
• B. Stays stable (except when working on eye)
• C. Moves toward blue downward
• D. Causes tingling

Answer: (A)

In micro-current therapy, each electrode has a fixed polarity, and the opposite charges attract, so the negative (cathode) probe is drawn toward the positive (red) electrode. On the face, this means the negative probe will tend to move toward the red electrode that’s placed above or in a higher position, guiding the current path upward along the treatment area. The exception around the eye reflects safety considerations; the eye is more sensitive, so practitioners adjust technique to avoid directing current toward the eye. Tingling can occur with micro-current, but the behavior described here specifically relates to how the electrical field draws the negative probe toward the positive electrode.