What color is typically used to indicate that an electrode is a cathode?

The color typically used to indicate that an electrode is a cathode is black. In electrical and electrotherapy contexts, color coding helps differentiate between the cathode and anode for safety and efficacy during treatment. The cathode is the electrode through which current flows into the electrolytic cell or tissue, making it significant in procedures such as galvanic treatments in esthetics.

While other colors like red and blue may represent different functions or types of electrodes, black is universally recognized in many fields as indicative of the cathode. This helps estheticians easily identify connections and ensure that they are using equipment correctly, which is essential to client safety and optimal treatment outcomes.