In facial and scalp treatments, electrical current is typically measured in what unit?

In facial and scalp treatments, electrical current is measured in milliamperes. This unit is often used in the beauty and wellness industry, especially for treatments that involve microcurrent technology. Milliamperes represent one-thousandth of an ampere and provide a more precise measurement for the low-level currents used in these types of treatments. These low intensities are crucial to ensure safety and comfort for clients while still achieving effective results.

Amperes (the measurement in option B) represent a larger scale of electrical current and are generally not suitable for the delicate applications seen in facial and scalp treatments. Volts (option C) measure electrical potential difference rather than the flow of current, making them less pertinent when discussing the current itself in a treatment setting. Watts (option D) measure power and are a product of both voltage and current, but they do not specifically quantify the current directly. Therefore, milliamperes are the standard unit used in this context.