Electrotherapy is best described as the use of electrical currents to treat the skin.

• A. A manual massage technique.
• B. The use of electrical currents to treat the skin.
• C. Use of lasers to stimulate collagen.
• D. A form of exercise.

Answer: (B)

Electrotherapy in skin treatment involves applying electrical currents to the skin and underlying tissues to elicit therapeutic effects. The description “the use of electrical currents to treat the skin” captures this approach, since the goal is to use current to influence skin function, such as improving circulation, aiding ingredient penetration, and supporting tissue conditioning. Manual massage relies on physical manipulation without electricity, lasers use light energy rather than electrical currents, and exercise is a physical activity, not a skin-treatment modality driven by electrical current.