Final answer:
Iontophoresis is the process of infusing water-soluble products into the skin with electric current in facial treatments.
Step-by-step explanation:
The process of infusing water-soluble products into the skin with electric current is called iontophoresis. Iontophoresis involves the use of a low-level electric current to deliver medications or substances deep into the skin. It is commonly used in facial treatments to enhance the absorption of water-based products and improve the overall results of the treatment.