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Which of the following is an expected outcome when using electric current on the skin?

  1. Hydration

  2. Increased moisture retention

  3. Enhanced product penetration

  4. Skin tightening

The correct answer is: Enhanced product penetration

When using electric current on the skin, one of the most significant expected outcomes is enhanced product penetration. Electric currents can facilitate the movement of products into the skin, improving the absorption and effectiveness of topical treatments. This process often utilizes methods such as iontophoresis, where charged particles are driven into the skin, allowing for deeper delivery of active ingredients that can target various skin concerns. The ability to enhance product penetration is crucial for maximizing the benefits of skincare products, particularly in professional treatments where specific results are desired. The method effectively allows for better utilization of the product's active ingredients, leading to improved overall results. While hydration, increased moisture retention, and skin tightening can also be effects associated with various skin treatments, they are not as directly linked to the action of electric current as enhanced product penetration is.