Which machine is known for its electrochemical effect in skin treatments?

The galvanic machine is known for its electrochemical effect in skin treatments due to its use of direct current to facilitate various skin therapy procedures. This device works primarily by promoting the infusion of active ingredients into the skin through iontophoresis, which utilizes electrical currents to drive charged molecules into the skin layers. This can improve hydration, enhance the penetration of products, and promote overall skin health.

In contrast, microdermabrasion machines primarily work by mechanically exfoliating the skin's surface, while laser devices use concentrated light beams for types of skin treatments, such as resurfacing or pigmentation correction. High-frequency machines utilize electrical currents to stimulate skin and hair growth, primarily through thermal effects rather than the chemical changes facilitated by the galvanic process. Thus, the galvanic machine’s unique focus on electrochemistry differentiates it from the other options presented.