Microcurrent facial devices deliver current measured in:
Explanation
Microcurrent, as its name suggests, is delivered in MICROamperes, on the order of millionths of an ampere. The level is so low that most clients feel only a faint metallic taste from electrodes near the mouth, not muscle contraction. The current is thought to influence the resting bioelectrical state of facial tissue without forcing visible contractions, in contrast to faradic current, which deliberately contracts muscle. California electrotherapy use sits under CCR Title 16 §979.2 and the BBC's scope rules. Option A confuses microcurrent with faradic. Option B confuses it with high-frequency. Option D is physically impossible and is not a real device specification.
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